The bearded winger could however, make €11 million with bonuses included.
The Turkish international will earn an additional €1 million if he plays in over 60 percent of games per-season for his new team and an extra million for winning the Champions League.
Turan is however, obliged to give half his earnings over €1 million to the tax man which would leave him with €4 million from his base salary.
Barcelona signed Turan from Atletico Madrid on a €41 million transfer fee last month.
Despite being the La Liga giants most expensive signing of the season Turan will not be able to play until January due to the FIFA transfer ban imposed on the club.
Turan is no stranger to Spanish football having won everything at domestic level with Atleti and every European trophy other than the Champions League – although he was part of the side that reached the final.