Sancho spent on-Loan with Chelsea last season, although the blues spent its £ 25 million permanent option.
Il Corriere Dello Sport says that this week United has now accepted an offer from Juve for £ 21.5 million.
England International, however, still has to agree on personal conditions with the Bianconeri.
Together with Juve, the former club Borussia Dortmund is also interested, although they insist on a loan-to-buy scheme instead of the outright range of the Bianconeri.