Roberto has established himself as a key player for Barcelona since breaking into the first team in the 2015/16 campaign.
He’s played in all-but one of Barca’s La Liga games this season as they sit unbeaten at the top of the table, chipping in with a goal and two assists.
And according to Spanish outlet Don Balon, Manchester United manager Jose Mourinho is a huge admirer of the 25-year-old.
Mourinho is said to have told United chiefs to stop at nothing to sign the Spain international.
The Barcelona academy product has a £36million release clause in his contract, and Mourinho feels he’s worth every penny.
Roberto has become a utility man at Barcelona over the past two years, having been used as a makeshift right-back following the departure of Dani Alves in 2015.
And it’s his versatility that is said to appeal to Mourinho, despite the Spaniard keen to return to his natural role in central midfield.
Despite only forcing his way into the first team two years ago, Roberto has helped Barca to 13 honours including four La Liga titles and two Champions League crowns.