3) Arda Turan
After playing no part in any of the games for Barcelona in the first half of this season, Turan was loaned out to İstanbul Başakşehir. Having joined Barca in 2015, Turan made only 36 appearances for the club and scored 5 goals.
The 31-year-old is highly expected to be permanently leaving the club this summer as Barcelona are looking to get another striker to boost their attacking threat. Over the years, Turan has been linked to moves to Premier League clubs. However, given this age, he is unlikely to be joining a Premier League side.
Arda came into the side for a whopping transfer fee but stayed out of action for a long time with the transfer ban having been imposed on the Catalan club before he could play. However, the Turkey international has failed to press claims.