The 'Boys in Green' have lost successive games against Austria and Bosnia Herzegovina, failing to score in either tie, but the were well supported throughout.
"We owe the fans, especially in a game of that magnitude. We need to win that football match," Saville said.
"We owe the fans a lot. They were in here in numbers again, singing all night and even long after the final whistle we could hear them in the changing room. They were absolutely brilliant.
"They really inspire us with all their support - it's mind-blowing how supportive they are. They are just fantastic.
"I have never seen anything like it and we as a team appreciate every single one of them and how they support us home and away."