A hamstring injury has kept Aguero on the sidelines for Man City's last four games, including Sunday's 1-1 draw with Premier League champions Liverpool at the Etihad.
Manchester United and Nottingham Forest legend Roy Keane admits he was surprised to see that Manchester City striker Kun Aguero had put on weight when he played his first match of the 2020-21 campaign, saying the Argentine needs look after himself when he's on the sidelines.
The former Atletico Madrid striker has only been able to play three games [against Arsenal, Porto, and West Ham] for the Cityzens this season due to a hamstring injury that has plighted his campaign so far.
However, when he returned to play those matches for Pep Guardiola's side, the ex-United midfield marshall Keane said the 32-year-old's fitness left him a little bit "worried".
“My issue with Aguero when he came back was he looked overweight,” the Irishman said on Sky Sports.
"God knows what size shorts he was wearing but he looked really heavy.
“Sometimes you can be out injured, come back and hit the ground running, [I don’t agree with] this idea that players need two to three months to get back up to speed.
“But I was really worried when he came back as he looked really, really heavy."
Former City defender Micah Richards stood up for his former team-mate by saying Aguero might have rushed back to action too quickly.
“I think that is because he has been rushed back," Richards said in response to Keane's remarks. "Everyone is always asking, ‘Where is Aguero? Let’s get him back’.
“Sometimes when you are needed so much, you are not even fully fit, you’re being rushed back and you’re being judged out on the pitch.
"You know you are not really up to speed but you’ve got to do it for the team.”