Conor McGregor has put on a considerable amount of weight and a lot of muscle while recovering from a broken leg.Fans were able to put his size in perspective when the Irishman posted a photo of himself alongside UFC welterweight Stephen 'Wonderboy' Thompson.Conor McGregor looks bigger than a fighter who is a weight class above his lightweight division. However, McGregor will likely fight at welterweight upon his return to the octagon this year after over two years.One user pointed out how McGregor's head has gotten visibly larger:"Conor has that growth hormone sized head."MMMATH@MMMATH3@espnmma @SportsCenter @TheNotoriousMMA Conor has that growth hormone sized head.@espnmma @SportsCenter @TheNotoriousMMA Conor has that growth hormone sized head.One user accused 'The Notorious' of using growth hormones:"Dude’s head has gone full Barry Bonds. Head growth is pretty common when you’re FULL of HGH"Money Mauricio Sulaiman@MoneyMauricioBX@espnmma @TheNotoriousMMA Dude’s head has gone full Barry Bonds. Head growth is pretty common when you’re FULL of HGH1021@espnmma @TheNotoriousMMA Dude’s head has gone full Barry Bonds. Head growth is pretty common when you’re FULL of HGHAnother user pointed out McGregor's head size:"The roids really changed the man’s whole dome structure"Ben🔜🌕@butze_@espnmma @TheNotoriousMMA the roids really changed the man’s whole dome structure34@espnmma @TheNotoriousMMA the roids really changed the man’s whole dome structure@Chips_WarMedals compared Conor McGregor to the Liver King, who was recently exposed for using steroids:"Conor turning into that liver king guy"ChipsWarMedals@Chips_WarMedals@espnmma @TheNotoriousMMA Conor turning into that liver king guy32@espnmma @TheNotoriousMMA Conor turning into that liver king guyOne user joked that McGregor has no neck muscles now so fighters would not be able to choke him, similar to how Alexander Volkanovski is made fun of:"News from McGregor camp : now that he doesn't have any neck muscle, people are finding hard to choke him ...ps: transformation inspired by volk"Heamanth@Heamnath01@espnmma @TheNotoriousMMA News from McGregor camp : now that he doesn't have any neck muscle, people are finding hard to choke him ...ps: transformation inspired by volk1@espnmma @TheNotoriousMMA News from McGregor camp : now that he doesn't have any neck muscle, people are finding hard to choke him ...ps: transformation inspired by volkConor McGregor gives his first thoughts about his fight against Michael ChandlerConor McGregor has announced his return to the octagon. The former UFC lightweight champion will first work as a coach in season 31 of 'The Ultimate Fighter'. After the season ends, he will take on his rival coach Michael Chandler in what is expected to be a welterweight fight. This marks McGregor's fourth fight in the division as he looks to become a three-weight world champion.Ahead of his highly awaited return to the octagon, McGregor spoke to Donagh Corby from Mirror Fighting about his fight:"Looking forward to it. Feel good, feel energetic, feeling ready. You know, I'm throwing up my high kicks faster than I'm throwing up my jab, so I'm very excited to get back alright."Conor McGregor will fight Chandler, who is himself looking to get back to winning ways after having won just one out of his last four fights. Similarly, McGregor has also won just one of his last four bouts. The matchup is a make-or-break fight for both fighters.Take a look at the interview:Mirror Fighting@MirrorFightingEXCLUSIVE@TheNotoriousMMA speaks for the first time on his comeback fight with Michael Chandler | @DonaghCorby_Full story HERE: mirror.co.uk/sport/other-sp…14119🚨EXCLUSIVE🚨@TheNotoriousMMA speaks for the first time on his comeback fight with Michael Chandler | @DonaghCorby_Full story HERE: mirror.co.uk/sport/other-sp… https://t.co/LhKNmqWmEt