Atletico Madrid's top scorer Diego Costa was not even fit enough fora place on the bench as his side aim to qualify for the Champions League semi-finals when they host Barcelona on Wednesday.The Spanish international limped off with a hamstring injury after just half an hourof last week's 1-1 draw in the first leg of the quarter-final tie at the Camp Nou.Adrian Lopez, who has scored just two goals in 31 appearances this season, takesCosta's place alongside former Barca striker David Villa in attack, whilst Raul Garciareplaces the injured Arda Turan in Diego Simeone's only other change from the firstleg.Barcelona boss Gerardo Martino makes just one enforced change as Marc Bartrareplaces the injured Gerard Pique in central defence.However, Cesc Fabregas is expected to play in a more advanced role than he hasdone in recent weeks, alongside Neymar and Lionel Messi in attack, with AndresIniesta returning to his favoured position in central midfield.Starting line-ups:Atletico Madrid (4-4-2)Thibaut Courtois; Juanfran, Diego Godin, Miranda, Filipe Luis; Koke, Gabi (capt),Tiago, Raul Garcia; David Villa, Adrian LopezBarcelona (4-3-3)Jose Manuel Pinto; Dani Alves, Marc Bartra, Javier Mascherano, Jordi Alba; SergioBusquets, Xavi (capt), Andres Iniesta; Neymar, Lionel Messi, Cesc Fabregas.Referee: Howard Webb (ENG) Source: AFP