The club bid farewell to the pair whose contracts have expired after they have both experienced a successful spell at Stamford Bridge
The Ivorian joined the club in 2006 and leaves with numerous winners' medals including the Premier League, FA Cup and Champions League, and scored 60 goals during his six seasons with the Blues.
Bosingwa joined Kalou at Chelsea in 2008 and also boasts an impressive medal collection after his time at Stamford Bridge.
With 126 appearances, the Portugese right-back had an injury-blighted four seasons, joining from Porto for €20.5 million from Porto, signed by Luiz Felipe Scolari.
Both players had critical roles in both the Champions League and FA Cup final triumphs last season.