Based on the search results, it seems that there have been some issues with Jadon Sancho at Manchester United. Here is a summary of what happened to Sancho:

• Sancho was left out of the squad for several games at the start of the 2023/24 Premier League season because his performances in training were not up to scratch.
• Sancho disputed his managers claims and there was speculation that he might be sold or loaned out.
• Sancho was banished from all first-team facilities at Manchester United, including the dining room, after he refused to apologize to manager Erik ten Hag for his public outburst on social media following a Premier League game with Arsenal.
• Sancho has been training with academy players and is on a personal training program away from the first-team group.
• There have been rumors that Sancho might leave Manchester United in January when the transfer window opens.

It is unclear what will happen to Sancho in the future, but it seems that there have been some disciplinary issues between him and the club.