FIFA has imposed a transfer ban on Trabzonspor, keeping the Turkish club from registering new players during the next window.
The ban was imposed after the club missed a 30-day deadline to settle an unpaid transfer fee to Slovakian club Trencin, FIFA said.
Trabzonspor signed Slovakia midfielder Matus Bero from Trencin for a reported €2.5 million in August 2016.
FIFA says Trabzonspor have been "banned from registering any new players -- either nationally or internationally -- for the entirety of the next registration period."
Though the club can sign players in the offseason, they cannot be registered with the Turkish football federation to play until January.
Trabzonspor, seventh in the 18-team league, can appeal to the Court of Arbitration for Sport.