The 18-year-old is also being tracked by Liverpool and Manchester City after the midfielder impressed despite only making his debut last October.
Hargreaves has come out to admit that the Portugal Under-19 star would be a great buy for United and is confident that he can live up to his massive price-tag.
“I’m not sure 60m euros is a gamble,” he said.
“The release clause is ridiculous but he’s gonna be a super player no question.
“18-year-old, only played fifteen games so far but he’s got a terrific future ahead of him.
“He’s more of a box-to-box midfielder. Really good passer of the ball. Great striker of the ball from distance.”
The Red Devils will not be deterred by his valuation given that they have been linked with a host of mega deals heading into the summer.
They are also believed to be considering a deal worth around the £60million region for Borussia Dortmund star Pierre-Emerick Aubameyang.
Sanches has already featured 33 times in all competitions for his side this term, so far scoring six goals while managing to provide another one assist.