It comes as good news for Barca fans, who had feared that the untested Yerry Mina would be thrust in for his debut in the game.
As late as Ernesto Valverde's press conference on Wednesday there were doubts as to Pique's availability but his return will come as a big boost as the Catalans look to hold onto a slender 1-0 advantage from the first leg.
Pique ended the draw with Espanyol at the weekend suffering some discomfort in his right knee but after training as normal on Wednesday he has been cleared to feature against 'Los Che'.
Ousmane Dembele and Thomas Vermelen were once again missing from the squad list due to injury, though the former is thought to be on the comeback trail.
Barca's squad is as follows: Ter Stegen, Semedo, Pique, Rakitic, Busquets, Iniesta, Suarez, Messi, Cillessen, Coutinho, Paulinho, Alcacer, Alba, Roberto, Gomes, Vidal, Umtiti, Mina.
7 February 2018