The 27-year-old arrived at Stamford Bridge from Werder Bremen in 2012 but made just 16 appearances for the Premier League side, spending time on loan at Sevilla, Fiorentina, Anderlecht and Trabzonspor
Bosnian-born Marin , who won the last of his 16 international caps six years ago , was part of the Blues squad which lifted the Europa League trophy in 2013
A statement on Chelsea's official website reads: " We thank Marko for his efforts as a Chelsea player and wish him well in his future career."
Source : PA
Source: PA