Not sure myself. It's hard to come back under these circumstances. Just an injury then good chance.
However, the substance misuse is defining factor for me. Have association with other sport, and the amount of youngsters who show real promise, hit 18 go partying and having fun, then try and get back in after several years literally none do. I suppose the difference here he has personal wealth to finance intense fitness rehabilitation and has the access to some good resources as he is under contract.
Like to believe if he is deemed fit enough for top flight football he pays us back if wanted at Everton...