I like Jones. One of my favourite players. At 24, despite being 'injury prone' at the moment, he's bound to have a break out season soon. I mean, prior to this season, Smalling never had a full season for us and he's 26. Look at him now. Arguably the best defender in the league.
People will talk about him being 'ruined' by U21's, but it happens. If your up against a skilful player, regardless of age, he will give you trouble. Look at what Rashford and Martial have done to opposition players.
I think if Jones can stay fit, which is a big if, then he'll do well. I just get the feeling the staff are running out of patience. To add to that, we have Mensah, Williams and Tuanzebe coming through.