As a result of the injury, Barkley has not featured for the Toffees this season, so it could take him some time to get up to speed with his new side.
Now at Chelsea, he has that chance to let his talent blossom and although it won't be easy at Stamford Bridge - if he can succeed, then the world will be at his feet.
Do you think Chelsea need a player like Barkley?
Former England coach Steve McClaren is backing Ross Barkley for success with new club Chelsea. "He's very young, I think he has a lot of space for improvement, he's very strong physically with good technique".
Chelsea director Marina Granovskaia added: 'Ross is a player we have long admired and are certain he will prove to be an important player for Chelsea.
The England worldwide sealed a £15m transfer to Chelsea to become Antonio Conte's first signing of the January transfer window.
'For sure he is a good prospect for Chelsea'.
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Premier League champions Chelsea have been linked with a shock move for an Everton star as they look to bolster their squad in this transfer window.
Conte urged caution over expectations for Barkley.
Ruben Loftus-Cheek is now prospering on his season-long loan at Crystal Palace and fans desperately want him to see him in the Chelsea squad next season.
"He had a bad injury and has not played for seven months".
'We must have great patience.
Conte declined to address rumours West Ham striker Andy Carroll was a target, saying transfers were not his remit.
Conte plans to rotate his options for Saturday's trip to Norwich. He turned the opportunity down, though, choosing to focus on his recovery from a long-term hamstring injury instead.
Charly Musonda is available following a groin problem.