Kris Boyd has terminated his contract with Turkish club Eskisehirspor and has started legal proceedings against them for alleged loss of earnings.
The Scottish Premier League's all-time highest goalscorer has left the club only five months after he signed a lucrative three-year contract from Middlesbrough.
Boyd's agent, Mark Donaghy, has confirmed that the former Rangers and Scotland striker will be available to join another club in next month's transfer window.
"Kris has triggered a release clause in his contract," Donaghy told Sky Sports News.
"His contract has been terminated because of late payments and a legal process is now under way. He will now head back to the UK."
It is believed Boyd has yet to receive a monthly salary from Eskisehirspor after he received a signing-on fee in July.
A complaint will also be made to FIFA, world football's governing body.
Former manager Bulent Uygun, who signed Boyd, was arrested as part of a match-fixing investigation only days after he joined.
Eskisehirspor are currently five points behind leaders Galatasaray, and are understood to have made repeated requests for Boyd to stay.