Aleksandar Tonev's hearing over an allegation of racial abuse has been postponed until 30 October.
The 24-year-old Celtic winger was accused by Aberdeen's Shay Logan, leading to a notice of complaint from the Scottish FA's compliance officer.
But the principal hearing, originally scheduled for 9 October, has been delayed because of Tonev's inclusion in the Bulgarian national squad.
Tonev is in the squad for Euro 2016 qualifiers against Croatia and Norway.
Police Scotland has also confirmed it will not be taking further action over the alleged incident after Logan declined to make an official complaint.
Tonev is on loan at Celtic Park from Aston Villa and has made four appearances for the Scottish champions, two as a substitute.