This conflict most likely will not be resolved because seems Ten Hag doesn't want to using Sancho again so after winter transfer window opened Sancho will thinking moved to other team and he want return to his former club Dortmund because Sancho said he really want to play with this team if he leave Manchester United but Dortmund hasn't respond it yet because Sancho has contract duration until 2025 and his price tag was 45 millions so i am not sure Dortmund is willing to spend a lot of money to bought him because we all know Dortmund is typical team who doesn't want to spend huge money to gets the players
Erik Ten Hag did not handle the issue of Jadon Sancho even if it was the player that made the biggest mistake. There are some comments that a coach shouldn't make against his players. Such comments can reduce the value of the player. He wouldn't have publicized that the reason for dropping the player in the game was because of lack of fitness. And Sancho wouldn't have also countered his coach publicly. This issue would have been handled internally.
Sancho was asked to apologise but he refused. His refusal propelled Erik to ban him from the team. He doesn't train, eat it even stay in the dressing room with the senior team. But the English player has made his decision to move to his former club in January. Manchester United might ask for as much as £40m from Borussia Dortmund.