#1 Douglas Costa
Brazilian winger Douglas Costa suffered from lack of fitness last season which saw him make just 25 appearances for the club in all competitions last season. He managed to score just one goal for the club and the 28-year-old is yet to justify the expectations that were around him when he was purchased by the club. Juventus is likely to invest a lot in this transfer window and Costa could be one player in the current squad who can help recover some of the funds.
Costa still has the potential to become a world-class winger and hence, he could command a decent bid from many European clubs. Juventus must look to cash in on this and sell Costa in this transfer window, especially with the arrival of Ramsey and Rabiot who might well take up the role Costa was being deployed in.
(All stats from trasnsfermarkt.com)