The winger's agent has claimed Liverpool had a £35 million deal agreed to sign him in January, only to pull out due to their defensive injury crisis.
Man Utd have also tried to sign Sarr on loan in the past.
For now the 22-year-old remains at Watford but on the evidence of his play on Saturday it is only a matter of time until he gets that big move.
Here are the details of Sarr's remarkable performance.
📷 Sarr: Match Snapshot
⚽ GOAL ⏱️ 15' Watford were already 1-0 up when Sarr was left in oceans of space after a defensive mistake. He collected a pass from Tom Cleverley and beat goalkeeper Daniel Bentley with a cool right-footed finish.
Sarr ended the match with two assists, including a clever cut-back when he was under pressure down the right to set up Ken Sema, who made it 4-0.
⚽ GOAL ⏱️ 55' With Watford four goals up at the break, Sarr continued the rout after half-time. He produced an impressive 20-yard finish into the bottom corner.
〽️ Sarr: Rating Week-on-Week
With two goals and two assists, Sarr earned an illustrious perfect 10 FC Rating.
His display was a perfect response to getting a score of 5.6 in the 0-0 draw against Coventry City last time out, one of his worst performances of the campaign.
Sarr completed four dribbles and won 10 duels, both game highs.
🗝️ Key Stats
Sarr: What Next?
Sarr is likely to be linked with transfers throughout the remainder of 2020-21.
They are fourth in the table and are away to mid-table Preston North End next on Tuesday.