Dani Alves has not been included in the Barcelona starting lineup for this evening's Champions League semi-final meeting with Chelsea at the Nou Camp.

Instead, coach Pep Guardiola has opted to start the match with a three-man defence consisting of the returning Gerard Pique, Carles Puyol and Javier Mascherano.

Chelsea's interim manager Roberto Di Matteo has named an unchanged side from the one that defeated Barcelona 1-0 last week.

That means Didier Drogba has been passed fit to start despite suffering with a knee injury.

Barcelona: Valdes; Puyol, Mascherano, Pique; Busquets, Xavi, Iniesta, Fabregas, Cuenca, Sanchez; Messi

Chelsea: Cech; Ivanovic, Cahill, Terry, Cole; Meireles, Mikel, Lampard, Ramires, Mata; Drogba