The Mirror says United have contacted Sancho's agent over a possible transfer. The Borussia Dortmund winger has been tipped to return to the Premier League this summer. United, Chelsea and Liverpool are eyeing the England international, 20.
And United have tried to beat their rivals to the former Manchester City winger.
The Red Devils have contacted Sancho's agent over a possible move.
However, United are reluctant to submit a formal approach for the youngster due to concerns over the summer transfer window.
The summer window will be affected by the coronavirus pandemic, with reports claiming it could be extended until next January.