Lionel Messi is set to start his first La Liga game as permanent Barcelona captain in Saturday's league opener against Alaves at Camp Nou.

Ernesto Valverde has opted for a 4-3-3 with the Argentine part of an attacking trident alongside Luis Suarez and Ousmane Dembele.

Sergi Roberto, Sergio Busquets and Ivan Rakitic make up the three-man midfield, while the backline is composed of Nelson Semedo, Gerard Pique, Samuel Umtiti and Jordi Alba.

New arrivals Clement Lenglet, Arturo Vidal and Malcom all have to make do with spots on the bench alongside January arrival Philippe Coutinho.

As for Alaves, Martin starts at right-back having been promoted from the club's B team, while there is a spot in attack for Jony, who joined the club on loan from Malaga this summer.

There is no John Guidetti tonight, meaning that former Real Madrid youngster Ruben Sobrino will lead the attack.

Barcelona: Ter Stegen; Semedo, Pique, Umtiti, Alba; Roberto, Busquets, Rakitic; Messi, Suarez, Dembele
Subs: Cillessen, Lenglet, Arthur, Rafinha, Vidal, Coutinho, Malcom

Alaves: Pacheco; Duarte, Maripan, Laguardia, Agirregabiria; Garcia; Wakaso, Torres, Jony, Gomez; Sobrino
Subs: Sivera, Ximo, Marin, Antonio, Burgui, Baston, Twumasi

Follow all the action from Camp Nou with Sports Mole's live match commentary.