Barcelona defender Adriano will be sidelined for three weeks with a leg injury, dealing another blow to its already thin back line.

Adriano hurt a muscle in this right leg after scoring the opening goal in Barcelona's 3-1 win over Celta Vigo on Saturday.

Adriano joined Carles Puyol, Gerard Pique and Eric Abidal on the club's injured list.

Coach Tito Vilanova will have to again shuffle his squad to fill out its back line for Wednesday's Champions League game at Celtic with holding midfielder Sergio Busquets also suspended.

Javier Mascherano, Alex Song and 21-year-old Marc Batra could all get the nod.

Barcelona leads the Spanish league after a club-record start of nine wins and a draw in the first 10 rounds.