Amen. Although Martinez is clearly the biggest problem, our young stars are very flawed. Stones is an elegant player, but not at all a good defender. Barkley looks lazy. He doesn't run most of the time, over-dribbles once he gets near the box, rarely shoots. After an excellent first half of the season, Lukaku has disappeared, apparently caught up in his desire for CL.
Maybe if we can keep all 3, as well as, say, Mirallas and Deulofeu, a new manager could get the best out of them. But it's an interesting question whether it would be better to cash in big by selling the "big 3" and then "completely overhaul the squad.
I assume Lukaku will be sold. If Stones and Barkley stay, we'll see whether they improve drastically next season.