It's true Barcelona preformence was very bad in European Competitions but i believe xavi is doing a great job so far, Barcelona club was destroyed and to bring back old Barcelona i think xavi or any other coach will need longer time and xavi can do it in my opinion, not only because he's a great coach but also because he loves the club
Xavi's achievements in coaching the Barcelona team are now increasingly visible this season even though they still failed in European competition this season, but overall the Barcelona team has now shown their achievements again by topping the La Liga standings and also having the opportunity to lift the trophy in the Copa Del Rey this season. This is a very extraordinary thing for Barcelona if it can be achieved this season because previously they had slumped from their good performance.