Watford defender Pervis Estupinan is becoming one of the hottest properties of the upcoming transfer window.
Tottenham Hotspur, Manchester United, Barcelona and Atletico Madrid all want the player.
The Daily Express suggests that United have a lead in the race to sign him.
Estupinan is on loan with Osasuna this season, and the Spanish side can buy him for £9 million.
But it is unclear if they will secure his signature, given their financial circumstances.
That could open the door for other clubs to come in, especially if Watford decide to cash in on a player who has not featured for the first team.
He has been a Hornets player since 2016, but spent much of that time on loan.
