So so. Back in school but struggling as his identity is Athlete.
Did he need/have surgery on his arm?
...his identity is Athlete.
Not really sure what this means...
He sees himself as an athlete, and others see him as an athlete. If he's not able to participate in athletics, then it's like a part of him is missing.
That said, injuries happen to even the best of athletes, that's part of the deal. Gronk is still an athlete even if he has to miss most of the season.
Also, his whole social life is centered around being on teams - suddenly he went from being busy 6 days a week to having a hole in his life.