Speaking to CBS Sports on Wednesday, Alessandro Del Piero said: "When a player like Jadon Sancho can play these kind of games, with this kind of quality, you need to go to Manchester United.
"Next year maybe, one more year, lets see how he feels, which coach, ok, everything, this kind of player needs to play every year at the top. Don't get me wrong, Borussia Dortmund deserve to be there.
"They may go to the final and win the Champions League, but [it would be] something extraordinary for that. With Man United they are supposed to go every year. I know they are struggling, but you have to.
"You want to achieve with the big clubs and this is the destiny of Man United and the destiny of Sancho at some point. I hope for him that he can go there and perform in that way, with that personality, I really hope so."
Sancho has done quite well for himself since leaving Man United on loan in January after a bitter public feud with Erik ten Hag.
The 24-year-old play a key role in Dortmund's Champions League semi-final first-leg win against Paris Saint-Germain earlier this week.
