Barcelona could be set for a difficult summer transfer window, with several areas of the squad in need of strengthening but a limited budget for signings. Xavi’s side endured a tough season, after a disappointing campaign in La Liga and the Champions League, but the Spaniard has now reversed his previous decision to depart Barcelona. The former midfielder will be in charge for next season, but he will need reinforcements in his squad. Guido Rodriguez now looks set to join on a free transfer from Real Betis, but another midfielder will also be needed, as well as an attacker depending on outgoin…