Barcelona coach Xavi Hernandez says his squad would need to tweak things and come up with some variation in their Laliga clash with Alaves on Sunday, November 12 at the Estadi Olimpic Lluis Companys. The Catalans lost 1-0 to Shakhtar Donetsk on Tuesday, November 7 in Hamburg. Xavi reckons that the team would have to bounce back from the loss in their next match. Speaking in the press conference…