The Barcelona youngster has been linked with a move to Southampton in recent weeks.
Sports reports that the Red Devils have join the race to sign the 19-year-old when the January transfer window opens in January.
The player, who has shown promising signs this season cannot be guaranteed a first team minutes with the LaLiga champions under manager Ernesto Valverde.
Representatives from Manchester United have already hit Spain to hold talks with Barcelona in a bid to land the 19-year-old defender by January 2020.
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The Red Devils have also reportedly also ready to submit an offer of €20 million for the promising defender.
While the youngster is not guaranteed a playing time at Manchester United, he will walk straight into Saints’ lineup
The 19-year-old who has been compared to Juventus’ Matthijs de Ligt, is being monitored by many other top clubs in Europe .
Meanwhile, the real reason why Manchester United missed out on the chance to sign Liverpool’s new playmaker Takumi Minamino, has emerged
The reason was because Vice Executive Chairman, Ed Woodward ‘didn’t know’ about his release clause, according to Goal.
Ole Gunner Solskjaer’s side were one of a number of top clubs in Europe to have expressed interest in the player.