 Constant transferred to Turkish Süper Lig club Trabzonspor for a €2.5 million transfer fee in 2014, signing a four-year contract worth an annual average of €2.25 million.He made his official debut for the club against Russian side Rostov in the play-off qualifying round for the 2014–15 UEFA Europa League.Constant's contract was later terminated on 18 November 2015 for €2 million.