Bale has a better health situation, not many injuries, but had very little playing time, so he was not able to fully reveal himself. As for Azar, the situation is very difficult here, injuries follow him and this is a very big problem, both for the player and for the club. For Real, the purchase of Azar is definitely a bad deal.
His health is good enough but his mind is not well. He does not really want to expand his career after the contract expiration in Real Madrid.
Bale can play as a striker with his experience and shot accuracy. Much better than many young players but his teammates have to concentrate balls to Bale. I don't think coaches and big clubs will want to accept risks of Bale injury and build a tactic around him.
Azar, who is that player? I guess you implied about Hazard, didn't you?