Barcelona travelled to San Sebastian on Friday after training ahead of Saturday's game at Anoeta against Real Sociedad in La Liga (4pm CET).
Coach Ernesto Valverde, after speaking to the media, took charge of training and then named his squad, with Jordi Alba and Nelson Semedo both cleared fit to return to action.
The two full-backs have been missing since before the November international break but have trained all week and come into contention for the games against La Real and then Real Madrid, on Wednesday.
It means there's no place in the 19-man travelling party for Junior Firpo or Moussa Wague.
Meanwhile, Leo Messi, Gerard Piqué and Sergi Roberto all return to the squad after being rested for the midweek win over Inter Milan at the San Siro.
The two goalscorers from that game, Carles Perez and Ansu Fati keep their places in the squad, as do Jean Clair Todibo and Carles Aleña, who both did well in Milan.
Finally, Arthur Melo and Ousmane Dembele remain absent due to injury problems. Dembele's out until February but there's no timeframe on when Arthur will return.
The full squad: Neto, Ter Stegen, Sergi Roberto, Piqué, Lenglet, Umtiti, Busquets, De Jong, Arturo Vidal, Rakitic, Messi, Suárez, Griezmann, Alba, Semedo, Todibo, Carles Aleñá, Carles Pérez and Ansu Fati.