I’ve seen many fans and pundits make this claim. Do you think Manchester United players aren’t playing as well as they can in hope to get Ten Hag sacked. I’ve seen this argument used against Rashford as people since he’s got his new contract he’s just content to get his money and play as well.
Though Hoijund has claimed the players all back Ten Hag still https://www.theguardian.com/football/2023/nov/09/erik-ten-hag-manchester-united-squad-backing-rasmus-hojlund
I think the players still trust/play for the manager. But I wouldn’t be surprised if they down tools after yet another contentious VAR decision not going our way