The full-back is said to have reached an agreement to join the Red Devils next season.
Alves is out of contract next summer and FIFA agent Francois Gallardo revealed that the Brazilian international ‘has signed a preliminary agreement with Manchester United.’
Despite Gallardo’s statement other sources suggest that Alves is actually negotiating to extend his stay at the Nou Camp.
The 31 year old joined Barcelona from Sevilla in 2008 and with them has gone on to win numerous domestic and European trophies.