FA Cup is United's only chance to lift a trophy this season and they may as well win it all since City could go all out while competing for the Premier League title. They may not have enough fit players to compete in the Finals that is scheduled to be on May 25, 2024 and that's after match week 38 if I'm not mistaken.
Can they afford to lift the FA cup trophy against Man City I think is not going to be possible for them, they didn't have what it takes to lift the FA cup trophy just check out what they played yesterday against Coventry of Championship them for almost lost to Coventry yesterday if not for Coventry player that miss their penalty, don't know that they would have lost the game yesterday so I have a strong feeling that Man City is going to won them in the final.