Would you rather him fully recover from his injury and get back to his best or have another relapse?
If he isn't fully recovered by now, then he never will be. 2 months is far longer than what he needed to heal, he stayed back and trained so much that I'd bet he's fitter than anyone else in the squad right now. A relapse is just as likely right now as it will be 3-4 games from now, resting him would do nothing to help him recover any further than what he already has.
The point of not including him in the Elche game is because I don't think the medical staff has had a long enough look at him for them to give him the green light. Also, he flew in only a few days ago and had maybe 1-2 training sessions max, not long enough to be re-integrated into the team fully. He could have been included in the squad with ease, but over-precaution and patience are the reasons he stayed back.