Manchester United will face competition from Barcelona for Granada fullback Guilherme Siqueira this summer.

United chief scout Martin Ferguson has made checks on the Brazilian in the last two weeks and has been told by Granada directors they won't block the 25 year-old from leaving.

Siqueira's contract carries a €15 million buyout clause, though United will seek to pay less than half that amount.

Barcelona coach Pep Guardiola is also keen and recently declared: "Siqueira is a fantastic wing-back who we must follow very closely."

Barca will step up their interest with another fullback transfer target, Jordi Alba, now leaning towards penning new terms with Valencia.