Conor McGregor evidently has a lot of respect for his former foe Jose Aldo. The Irishman once lashed out at former undefeated lightweight champion Khabib Nurmagomedov for his critical comments about the Brazilian.In a 2021 press conference for the Gorilla Fighting championship (now known as Eagle FC), the Russian suggested that Jose Aldo was no longer in his prime and that the T.K.O loss to Petr Yan was proof of that:"He got beat up when he fought... Petr Yan right?... Just like Aldo's fight against Pedro Munhoz, let him fight Yan the same way and then we can say he has peaked again. You saw what he did, he closed up and waited for the ref to stop the fight. That shows you're not at your peak. I call those fighters businessmen, they come out to make money." [quotes translated by the YouTube channel]Watch Khabib Nurmagomedov speak about Aldo below:A clearly enraged McGregor hit back at 'The Eagle' with some of his signature trash talk. In an Instagram live post, 'The Notorious' said:"Another press conference! What’s he even doing? More talking is he? Then disrespecting Aldo? Little fool of a thing. I’m sick of these little fools mouthing about people."Watch Conor McGregor blast Khabib Nurmagomedov below:Aldo recently announced his retirement from the sport following his UFC 278 unanimous decision loss to Merab Dvalishvili.Fighters react to Jose Aldo's retirementFollowing Jose Aldo's retirement announcement, the fighting community came together to pay respects to the UFC legend's incredible career. Fighters including UFC A-listers such as Max Holloway and Petr Yan took to Twitter to congratulate the Brazilian on his stellar run in the UFC.On Twitter, former bantamweight champion Petr Yan said that Aldo is one of the best MMA fighters ever. Petr “No Mercy” Yan@PetrYanUFCOne of the best to ever do it. Enjoy your retirement legend @josealdojunior5755229One of the best to ever do it. Enjoy your retirement legend @josealdojuniorMeanwhile, Adrian Yanez said that the Brazilian is one of his favorite fighters.Adrian Yañez@yanezmmaIf it's true that he retired.@josealdojunior you're one of my favorite fighters and an absolute legend. Enjoy retirement, thank you for all the memorable moments 109879If it's true that he retired.@josealdojunior you're one of my favorite fighters and an absolute legend. Enjoy retirement, thank you for all the memorable moments 🙏Former two-division champion Henry Cejudo had this to say about Aldo's retirement:"I always wonder what could've been. I spent a whole camp training to fight Jose Aldo in Brazil, but COVID changed everything. I was looking forward to the challenge & crazy atmosphere. Happy retirement to one of the greatest featherweights in MMA history @josealdojunior"Henry Cejudo@HenryCejudoI always wonder what could've been. I spent a whole camp training to fight Jose Aldo in Brazil, but COVID changed everything. I was looking forward to the challenge & crazy atmosphere.Happy retirement to one of the greatest featherweights in MMA history @josealdojunior 🏽2588100I always wonder what could've been. I spent a whole camp training to fight Jose Aldo in Brazil, but COVID changed everything. I was looking forward to the challenge & crazy atmosphere.Happy retirement to one of the greatest featherweights in MMA history @josealdojunior 👏🏽🇧🇷 https://t.co/I4fHHLBMgcFormer featherweight champion Max Holloway congratulated Aldo on an incredible career and encouraged the Brazilian to enjoy retirement:"The King of RIO! What a career brother! Go enjoy retirement brother. Eat some açaí with cashew and powder milk for me."Max Holloway@BlessedMMAThe King of RIO! What a career brother! Go enjoy retirement brother. Eat some açaí with cashew and powder milk for me 🤙🏻 @josealdojunior7798395The King of RIO! What a career brother! Go enjoy retirement brother. Eat some açaí with cashew and powder milk for me 🤙🏻 @josealdojuniorFeatherweight champion Alexander Volkanovski wished the 36-year-old the best in his future endeavors.Alex Volkanovski@alexvolkanovskiWish nothing but the best to the Featherweight Goat @josealdojunior 5570278Wish nothing but the best to the Featherweight Goat @josealdojunior 🙏Former middleweight title challenger and fellow Brazilian Gilbert Burns congratulated Aldo in an emoji-filled tweet. GILBERT BURNS DURINHO@GilbertDurinho 🏾🏾🏾🏾🏾 @josealdojunior twitter.com/onpointmma/sta…MMA On Point@OnPointMMAThanks for the wars, Jose. Source, Combate: ge.globo.com/combate/notici…105228Thanks for the wars, Jose. 🙏👑Source, Combate: ge.globo.com/combate/notici… https://t.co/x87JQXWTyl👑 👑👑👑👑 ✊🏾✊🏾✊🏾✊🏾✊🏾 @josealdojunior twitter.com/onpointmma/sta…UFC heavyweight Tom Aspinall kept things short and simple with a single worded tweet.Tom Aspinall@AspinallMMALegend twitter.com/mmajunkie/stat…MMA Junkie@MMAJunkieWhat. A. Career."The King of Rio" Jose Aldo has informed the #UFC of his retirement. Full story: bit.ly/KingOfRio39610What. A. Career."The King of Rio" Jose Aldo has informed the #UFC of his retirement. 👑 🇧🇷 Full story: bit.ly/KingOfRio https://t.co/i1dhuudBdcLegend twitter.com/mmajunkie/stat…UFC women's flyweight Lauren Murphy stated that Aldo was one of the greatest fighters ever to step foot in the octagon. Lauren Murphy@LaurenMurphyMMAI’m so glad I got to see one of his fights and walkouts live. One of the GOATS of MMA. What a career. twitter.com/aaronbronstete…Aaron Bronsteter@aaronbronsteterPer @raphamarinho and @zeca_geraldo of Combate, Jose Aldo is retiring from MMA.He requested his release from the UFC with one fight left on his deal on the terms that he would be retiring from the sport and it was granted by the promotion per the reportge.globo.com/combate/notici…201Per @raphamarinho and @zeca_geraldo of Combate, Jose Aldo is retiring from MMA.He requested his release from the UFC with one fight left on his deal on the terms that he would be retiring from the sport and it was granted by the promotion per the reportge.globo.com/combate/notici…I’m so glad I got to see one of his fights and walkouts live. One of the GOATS of MMA. What a career. twitter.com/aaronbronstete…Featherweight contender Billy Quarantillo tweeted that it was a pleasure to train with Aldo in The Ultimate Fighter 2015.Billy Quarantillo@BillyQMMADon’t know if this is it, but If so was a pleasure meeting and training with @josealdojunior 2015 on tuf - absolute legend @fightpicsgohard 2268Don’t know if this is it, but If so was a pleasure meeting and training with @josealdojunior 2015 on tuf - absolute legend @fightpicsgohard 💯 https://t.co/6iDrsTOTP3