Rudi's spat with ref.
Lawyer Young's firm, Brechin Tindal Oates, say he has not paid a legal bill.
The Glasgow firm claim they are owed money - believed to be a five-figure sum - for work done for Vata last year.
Albania-born Vata, 39, now a football agent, says he has paid the bill and is contesting the action at Hamilton Sheriff Court.
Young, 50, recently retired after 25 years as a top referee.
Row: Vata, left, Young