Ten Hag may want to restore the performance of the existing players, because basically they are quality players only in the last few seasons they failed to present their best game. Overall, Manchester United have a pretty good squad, but for some reason they are playing below the quality they have. I think Ten Hag is aware of it all, hopefully under his leadership the players can show real quality.
Like i have always said, unlike some people i do not think United's problem was all about their manager, even when Ole was in charge, i kept saying firing Ole would not bring immediate improvement, Ragnick came in and things weren't any different, the players have a responsibility to their club and fans, and currently they are not living up to that responsibility. There is enough quality in that team, i mean, they have been spending so much money on players in the last couple of seasons, so these players have to charge themselves and represent their club with all of their ability.
Erik is good, and he has a huge job ahead of him, his major task now is to get the best out of his players so they play in the style he wants them to play, any player who doesn't fit in should go, it is as simple as that, no player is bigger than the club.