Barcelona will be aiming to bounce back from a difficult campaign next season, but transfers will not be easy this summer. The Blaugrana will likely need to make big sales in order to facilitate spending within the salary cap, and it now appears that Xavi will want to change formation next season. His side have played in a variety of shapes, but it now appears that a return to the standard Barcelona 4-3-3, with inverted wingers, will now take place. This change could mean that Brazil International Raphinha is sold, which could make way for the arrival of a more natural left-winger. Raphinha co…