New Barcelona manager Hansi Flick will be eager to add more quality to his squad, but he should avoid one player who is keen on joining. Barcelona are struggling financially and will need to be creative over how they strengthen the squad, and they are in the market for a defensive midfielder. Guido Rodriguez is set to join on a free transfer from Real Betis as a squad option, but Barcelona need a starter who can try to replace the influence Sergio Busquets had. A loan deal may be possible for Manchester City star Kalvin Phillips, and the Englishman would be keen on a move to the Camp Nou. Kalv…