This follows a report from The Independent a fortnight ago which claimed United had contacted Sarr.
The price listed was £ 40million. A separate 90 Min report last week said Watford could be open to a loan with an option to buy.
Sarr made his first start of the season for Watford this weekend in their 1-0 win over Luton.
When it comes to alternatives to Sancho, Sarr is acceptable, matching the similar profile of a talented young player.
He has great abilities, helping destroy Liverpool’s unbeaten season last year, and he has been compared to compatriot Senegalese Sadio Mane.
Against United last season, his shot drew an error from David de Gea for a Watford goal, but more impressive was how he tricked the usually unfazed Aaron Wan-Bissaka into cheating him on a tackle and giving a penalty.
The 22-year-old offers rhythm and unpredictability and he suits United’s counter-attacking style.
The supporters will have to be patient with him. He can be inconsistent and struggle to get back into shape at the end of last season.
But Sancho has also had his share of inconsistent form. United are buying potential, rather than a full player now.
Sarr could be a player worth buying, and part of the fan reaction was generally optimistic about a late move for the Watford ace.
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