The Champions League clash in Amsterdam is a vital encounter for both sides, and Bavarian whistler Aytekin will be the man in the middle.
Aytekin hit the headlines in his homeland two years ago when he abandoned a Bundesliga game at St Pauli after his assistant referee was hit by a full pint of beer thrown by a fan in the stands.
There was only two minutes to go and Schalke were leading 2-0, but Aytekin took the players off and called a halt to the game.
The experienced 35-year-old was in charge of Zenit St Petersburg's Champions League stalemate against Austria Vienna last month and he booked six players.
He has never officiated at a match involving a Scottish club before.