Danilo Pantic is set to reject a three-year contract extension with Chelsea.
The Serbian midfielder has not made an appearance for Chelsea since joining in 2015.
According to Serbian newspaper Telegraf, the 23-year-old wants to return to boyhood club Partizan Belgrade by forcing an early exit from Stamford Bridge.
Pantic is under contract until 2021 which includes a €3m.
But Partizan are not in a position to meet the fee, leaving Pantic in a tricky situation.
His last loan spell was with Hungarian outfit Fehervar before it was cut short in January.