The footballing world took to Twitter today to pay tribute to Sergio Aguero as he announced his retirement from the sport after suffering from cardiac arrhythmia.Sergio Aguero joined FC Barcelona on a free transfer after his contract at Manchester City expired this summer. The 33-year-old forward had picked up a calf injury which delayed his Barcelona debut until October.However, Aguero could only feature for his new team for a grand total of 165 minutes. The Argentina forward felt discomfort in his chest during Barcelona's La Liga game against Deportivo Alaves and was substituted in the first half. Aguero was later diagnosed with the aforementioned cardiac issue which has now prompted him to retire from football.Following the announcement, footballing personnel worldwide expressed their love and support for arguably one of the finest centre-forwards in the modern era. Here are some of the best tributes to Sergio Aguero:Kevin De Bruyne@DeBruyneKevOne of the best strikers ever! Want to wish you all the best for the future legend. See you soon @aguerosergiokun5:38 AM · Dec 15, 20215846928One of the best strikers ever! Want to wish you all the best for the future legend. See you soon @aguerosergiokun https://t.co/DLsZ2aL6jgYaya Touré@YayaToureSergio, my friend. I am sad to see you retire today but I am also excited for your future. You have so much to offer the game. We shared many great times and I feel blessed to have been your teammate. You will go down as one of the greatest. Playing alongside you was an honour!5:32 AM · Dec 15, 20213488467Sergio, my friend. I am sad to see you retire today but I am also excited for your future. You have so much to offer the game. We shared many great times and I feel blessed to have been your teammate. You will go down as one of the greatest. Playing alongside you was an honour! https://t.co/xS7THHb9yYManchester City@ManCityKing Kun.Everyone at Manchester City would like to take this opportunity to thank @aguerosergiokun for his incredible contribution to our success over the last decade and wish him well in his retirement 💙4:53 AM · Dec 15, 20215230110113King Kun.Everyone at Manchester City would like to take this opportunity to thank @aguerosergiokun for his incredible contribution to our success over the last decade and wish him well in his retirement 💙 https://t.co/AgMWXZtPZ8Real Madrid C.F. 🇬🇧🇺🇸@realmadridenIt was an honour to compete against a player like you, @aguerosergiokun, one of the best players in the world. Best of luck to you and your family.5:01 AM · Dec 15, 2021113261518It was an honour to compete against a player like you, @aguerosergiokun, one of the best players in the world. Best of luck to you and your family.Alan Shearer@alanshearerHappy retirement legend. What an incredible player. Stay well. @aguerosergiokun 👏🏻👏🏻👏🏻5:27 AM · Dec 15, 20212446141Happy retirement legend. What an incredible player. Stay well. @aguerosergiokun 👏🏻👏🏻👏🏻 https://t.co/XLWhoUyE6FFC Barcelona@FCBarcelonaKun, you'll always have a home here at Barça5:19 AM · Dec 15, 2021223302690Kun, you'll always have a home here at Barça https://t.co/dVBT7plcWlAtlético de Madrid@atletienglishThanks for the memories, Sergio. We wish you all the best.5:28 AM · Dec 15, 2021869125Thanks for the memories, Sergio. We wish you all the best. https://t.co/0gHVboqXPQFabrizio Romano@FabrizioRomanoRespect for an incredible player, amazing guy and fantastic striker who really loves football.Sergio ‘Kun’ Agüero 🎩🇦🇷🎥⤵️ @fcbarcelona5:06 AM · Dec 15, 2021191092489Respect for an incredible player, amazing guy and fantastic striker who really loves football.Sergio ‘Kun’ Agüero 🎩🇦🇷🎥⤵️ @fcbarcelona https://t.co/VMMTiV65dZJohn Terry@JohnTerry26One Of The Greatest @premierleague players EVER. @aguerosergiokun 💙LEGEND5:46 AM · Dec 15, 20211784194One Of The Greatest @premierleague players EVER. @aguerosergiokun 💙LEGEND https://t.co/8yWo7H43l7Simon Stone@sistoney67In his prime, Sergio Aguero was the best striker in the Premier League bar none. Fortunate enough to see many of his goals for @ManCity and for pure drama and the teams it involved, I can't see his goal v QPR being matched.5:38 AM · Dec 15, 202132422In his prime, Sergio Aguero was the best striker in the Premier League bar none. Fortunate enough to see many of his goals for @ManCity and for pure drama and the teams it involved, I can't see his goal v QPR being matched.Rayo Vallecano@RayoVallecanoFue un honor y un privilegio haber podido disfrutarte como rival, @aguerosergiokun.¡Te deseamos lo mejor y mucha fuerza, Kun!#FuerzaKun5:46 AM · Dec 15, 202125237Fue un honor y un privilegio haber podido disfrutarte como rival, @aguerosergiokun.¡Te deseamos lo mejor y mucha fuerza, Kun!#FuerzaKun https://t.co/zA4fG0H3x6Athletic Club@Athletic_en👏 Congratulations on a great career, @aguerosergiokun! It was an honour to compete against you. We wish you and your family all the best in the future!#AthleticClub 🦁5:38 AM · Dec 15, 2021173👏 Congratulations on a great career, @aguerosergiokun! It was an honour to compete against you. We wish you and your family all the best in the future!#AthleticClub 🦁 https://t.co/smnhXSziN3Gurpreet Singh Sandhu@GurpreetGKReally sad to see @aguerosergiokun having to call time on a phenomenal career the way he did. Also a reminder of how much we should cherish every single time we get to step on a football pitch.5:35 AM · Dec 15, 20211023Really sad to see @aguerosergiokun having to call time on a phenomenal career the way he did. Also a reminder of how much we should cherish every single time we get to step on a football pitch.Jérôme Boateng@JeromeBoatengGreat player, great career, great duels. Good luck for the future. @aguerosergiokun5:57 AM · Dec 15, 20219310Great player, great career, great duels. Good luck for the future. @aguerosergiokun https://t.co/O1SNjVP3r1LaLiga English@LaLigaEN#LaLiga clubs bid farewell to @aguerosergiokun. ❤️twitter.com/i/events/14710…6:02 AM · Dec 15, 2021315#LaLiga clubs bid farewell to @aguerosergiokun. ❤️twitter.com/i/events/14710…FC Bayern English@FCBayernENAn amazing career sadly comes to an end. All the best for your future, @aguerosergiokun! 🙏5:51 AM · Dec 15, 20211064130An amazing career sadly comes to an end. All the best for your future, @aguerosergiokun! 🙏 https://t.co/aPVy1IkwrcFantasy Premier League@OfficialFPL💙 @aguerosergiokun in #FPL:2️⃣7️⃣5️⃣ matches1️⃣6️⃣0️⃣3️⃣ points1️⃣8️⃣4️⃣ goals6️⃣5️⃣ assists2️⃣1️⃣6️⃣ bonus points3️⃣ seasons with over 200 points6️⃣ 20+ points hauls1️⃣ legend5:43 AM · Dec 15, 20212424368💙 @aguerosergiokun in #FPL:2️⃣7️⃣5️⃣ matches1️⃣6️⃣0️⃣3️⃣ points1️⃣8️⃣4️⃣ goals6️⃣5️⃣ assists2️⃣1️⃣6️⃣ bonus points3️⃣ seasons with over 200 points6️⃣ 20+ points hauls1️⃣ legend https://t.co/qVSENgVeYMNewell's Old Boys - English@Newells_enWe wish @aguerosergiokun all the best in his retirement & thank him for his legendary contribution to Argentine football.We witnessed his mercurial talent as a teenager playing for Independiente and in recent years, his brother Gastón briefly joined Newell's. #FuerzaKun5:42 AM · Dec 15, 202111215We wish @aguerosergiokun all the best in his retirement & thank him for his legendary contribution to Argentine football.We witnessed his mercurial talent as a teenager playing for Independiente and in recent years, his brother Gastón briefly joined Newell's. #FuerzaKun https://t.co/BaJcfo3YsBKyle Walker@kylewalker115Any excuse to share this photo then I always will. @aguerosergiokun. What a guy. What a career. Provided plenty of moments of magic & happiness and will go down as one of the best the Premier League has ever seen! 💙5:38 AM · Dec 15, 20211184Any excuse to share this photo then I always will. @aguerosergiokun. What a guy. What a career. Provided plenty of moments of magic & happiness and will go down as one of the best the Premier League has ever seen! 💙 https://t.co/ub4v7DI4SCOlympics@OlympicsThanks for the Olympic memories @aguerosergiokun5:37 AM · Dec 15, 202117827Thanks for the Olympic memories @aguerosergiokun https://t.co/jLdmhSqjRQUEFA Champions League@ChampionsLeague🗣️ "I leave with my head held high. I am very proud of the career I have had."Manchester City legend Sergio Agüero confirms his retirement. Thanks for the memories, Kun 👋@aguerosergiokun | @ManCity | #UCL5:12 AM · Dec 15, 20213361521🗣️ "I leave with my head held high. I am very proud of the career I have had."Manchester City legend Sergio Agüero confirms his retirement. Thanks for the memories, Kun 👋@aguerosergiokun | @ManCity | #UCL https://t.co/4i1RADUDK1Luis Garcia@luchogarcia14Congratulations Kun for your amazing career. We have enjoyed so much with your skills, goals and creativity,but also with your kindness and love for those around you. All the best for whatever it come next and be well mate. #Legend @aguerosergiokun5:30 AM · Dec 15, 202128225Congratulations Kun for your amazing career. We have enjoyed so much with your skills, goals and creativity,but also with your kindness and love for those around you. All the best for whatever it come next and be well mate. #Legend @aguerosergiokun https://t.co/mpNviIlesVRoy Nemer@RoyNemerAll things point to Sergio Aguero announcing his retirement from football. One of the greatest strikers of his generation, the man has an incredibly legacy. A legend with Manchester City, Copa America, U20 World Cup and Olympic champion with Argentina. Deserves a better ending.12:01 PM · Dec 15, 20211399179All things point to Sergio Aguero announcing his retirement from football. One of the greatest strikers of his generation, the man has an incredibly legacy. A legend with Manchester City, Copa America, U20 World Cup and Olympic champion with Argentina. Deserves a better ending. https://t.co/xOY6kB6WM2FC Schalke 04@s04_enA wonderful player has to sadly end his career early.It was a pleasure watching you, @aguerosergiokun (just not when you were scoring against us 😉)#S04 | #Aguero5:50 AM · Dec 15, 20217410A wonderful player has to sadly end his career early.It was a pleasure watching you, @aguerosergiokun (just not when you were scoring against us 😉)#S04 | #Aguero https://t.co/7XxTGFGJreSergio Aguero could only make five appearances for Barcelona since his summer move from Manchester City. The 33-year-old forward only scored once, which was against Real Madrid in El Clasico.It is worth noting that Sergio Aguero's time at Barcelona was his second stint in La Liga. The Argentine forward played for Atletico Madrid from 2006-2011 prior to his move to the Premier League. Aguero had a successful time playing for Los Rojiblancos, scoring 100 goals in 230 appearances. He went on to lift the UEFA Europa League and UEFA Super Cup with Atletico Madrid in 2010.Sergio Aguero was arguably one of Premier League's finest strikersSergio Aguero will go down as one of the Premier League's finest centre-forwards of his era. He first joined the league when he signed for Manchester City back in 2011 and went on to make an instant impact in the English top flight.The 2011-12 season will forever go down in Premier League history thanks to Sergio Aguero. The Argentine forward netted an injury-time winner against Queens Park Rangers to snatch the title away from rivals Manchester United on the final day of the season.Sergio Aguero is the Premier League's highest-scoring foreign player. The 33-year-old forward netted 184 goals in 275 appearances in the Premier League. Aguero is only behind the likes of Alan Shearer, Wayne Rooney and Andy Cole in the Premier League's all-time goalscoring charts.Sergio Aguero is also Manchester City's all-time record goalscorer. The forward has scored 260 goals in 390 appearances for the Cityzens. Aguero helped Manchester City win numerous trophies, including five Premier League titles, one FA Cup, six League Cups and three Community Shields.Premier League@premierleague⚽️ 184 goals🏆 5 titles😱 1 era-defining goalEnjoy retirement, @aguerosergiokun 🔵5:00 AM · Dec 15, 20213920538⚽️ 184 goals🏆 5 titles😱 1 era-defining goalEnjoy retirement, @aguerosergiokun 🔵 https://t.co/4ILvPpV92P