Line-ups: Alexis & Bartra start for Barca

Barcelona welcome back Alexis Sanchez for the Champions League match against Celtic at Camp Nou.

The Chilean attacker has been drafted in ahead of David Villa, and will partner Lionel Messi and Pedro in a front-three.

Tito Vilanova has solved the club's well-publicised defensive problems by bringing in Marc Bartra at centre-back, as he plays alongside Javier Mascherano, Adriano and Jordi alba.

In midfield, Alex Song gets the call ahead of Cesc Fabregas, as the Cameroon international starts with Andres Iniesta and Xavi.

Celtic meanwhile, can call upon goalscoring duo Gary Hooper and Giorgios Samaras, as they start the match up front.

Barcelona: Valdes; Adriano, Mascherano, Bartra, Alba; Xavi, Song, Iniesta; Pedro, Messi, Sanchez

Celtic: Forster; Lustig, Wilson, Ambrose, Izaguirre; Brown, Wanyama, Ledley, Mulgrew; Samaras, Hooper.

Tags Alexis Sanchez