By Jude Summerfield The mixed vibe continues to linger at Barcelona ahead of another tumultuous summer, but there were smiles for Xavi and his squad in midweek after their victory at Paris Saint-Germain. The Catalan giants took a large step towards reaching the final four of the Champions League with a dramatic 3-2 success at Parc des Princes. They’re not mathematically out of the La Liga title race, but with an eight-point deficit to leaders Real Madrid, no slip-ups can be afforded during the run-in. Next up for Barca is a clash with Cadiz on Saturday night. Here’s the starting XI Xavi could …