He had problems not only with Sancho but also with Ronaldo and they sent the player off the team. We can see that the Erik Ten Hag selection was very wrong with his slowly decreasing success graph. Erik Ten Hag has now had his chance and the team said they will send him off the team if the expected results are not achieved in the next 5 games. That's why the next 5 games are very important for Manchester. In my opinion, it is ridiculous that they gave him a chance for 5 games even after the defeat against Tottenham.
I have said before that Erik Ten Hag has always favored Dutch players and the players he has worked with in his former club. Cristiano Ronaldo and Sancho were not one if these category of players so I was not surprised to see the animosity towards them. Look at both players after leaving Manchester United and compare their stats and you will see that Sancho is a good player but poor management messed things up at Manchester United and made the players look bad.