PETR CECH leaving Chelsea to resume his playing career 'wouldn't be a surprise' to former Blues team-mate Mark Schwarzer.
The West Londoners recently shocked fans when they registered their legendary former No1 as part of their 25-man Premier League squad for this season.
Cech, 38, left Stamford Bridge for Arsenal in 2015, before hanging up his gloves last year.
He was then appointed as Chelsea's technical director, a wide-ranging role that has seen him get involved in transfers.
But Schwarzer, 48, who was Cech's team-mate between 2013 and 2015, believes that the Czech could make a comeback - after speaking to his pal on the phone.
He told Optus Sport: "I spoke to him two weeks ago and we were talking about lots of different things, talking about Mendy, Kepa and himself training.
"And he just was saying that he felt so good. He said to me that, had he have known that having time off he would have felt so good, he would have only had six months off and wouldn’t have retired.
"He actually believes he’s fit enough and strong enough and good enough still to play in the Premier League.
"So it’s an interesting one because he’s caught in two jobs at the moment, he’s Chelsea’s Technical and Performance Advisor and that is his number one role.
"But if an opportunity came along that was of interest to him, I wouldn’t be surprised if we saw Petr Cech coming back out of retirement and playing somewhere.
"I’m not saying it’s going to happen, but it would not be a shock to me if that happened."
Aussie Schwarzer also claims that, prior to Edouard Mendy's arrival at Chelsea, Cech was outperforming fellow goalkeepers Kepa Arrizabalaga and Willy Caballero in training.
He continued: "From my understanding, he was better than the Chelsea keepers – but this was before Mendy arrived at the club.
"He was performing and training better than the Chelsea keepers.
"I know he’s kicking the ball further than he did towards the end of his career, because the injuries he had, the problems he had with his ankle, his calf, they were hindering his kicking game.
"So apparently he has no problems with that at all anymore. He’s kicking the ball as far as he [ever] did.
"So he’s been working hard, he’s been playing in goal for ice hockey, he’s been doing lots of other fitness stuff, keeping very fit, doing lots of gym work.
"And he is, now you see in the last couple of weeks, he’s been training with Chelsea on the football pitch."