Bulgarian international Vladimir Gadzhev signed with the Sky Blues in March 2016.
The Sky Blues snapped up the experienced midfielder on a deal until the end of the 2016/17 season.
The 28-year old started his professional career in Greece with Panathinaikos and enjoyed loan spells with Levadiakos and OFI Crete.
In 2008, he moved back to his native Bulgaria on loan to Levski Sofia before making the deal permanent in 2009. Gadzhev was with the Bulgarian giants for six years where he made 186 appearances, scoring 25 goals, obtaining Champions League and Europa League experience, before leaving in December. His form at Levski saw him break into the Bulgarian national team in 2010 which has seen him capped 25 times.
Gadzhev scored his first goal for the Sky Blues in the 3-2 EFL Cup win over Portsmouth.