I certainly think Young is done. I think Jose will want to see what he can do with Januzaj or Memphis. Lingard is probably safe because Jose won't want to sell one of the local boys in his first summer. Also I think Lingard is the kind of player Jose will love having. He works hard, plays a tactical role well and will do his defensive duties.
I don't know anything about this guy but from videos he looks like he has potential but to be fair the defending in Mexico looks questionable at best. You'll never know how a young player will do until he actually plays. Our scouting network is usually decent so have faith that this guy would be a success if he arrives!