It seems Sancho doesn't want to move to AS Roma because I heard that AS Roma and Manchester United have agreed on a transfer fee for Sancho, but Sancho hasn't shown any positive sign of joining AS Roma this summer. In my opinion, Sancho wants to stay at Manchester United and see off his big money contract because I don't understand why a player who wants to leave Manchester United would reject a move to Chelsea because of a reason best known to him.
Sometimes a player who has had problems with a club wants revenge in a different way.
This season, Jadon Sancho is due to extend his contract, and if he doesn't agree to an extension next season, he will leave on a free transfer, after which he can choose any club.
AS Roma should likely stop pursuing this player because I believe Jadon Sancho has other plans, and AS Roma is certainly not his destination.
If Jadon Sancho plans revenge then it will ruin his career, now Jadon Sancho has no choice but to go to a team that gives him a place or time to play and Roma is the right choice, this negotiation did not go smoothly because Jadon Sancho wanted clarity about the status not just a loan without any continuation so I think Roma still has a chance to negotiate again in the remaining time of this transfer.