Midfielder Mika Baur hailed Celtic's "unbelievable" victory against Besiktas and believes it sets a new standard for the team.

Substitutes Camilo Duran and Callum Osmand changed the game for Celtic, as they came from 1-0 down to eventually triumph 3-2.

It was a much-needed win for Celtic's Europa League hopes as they registered their first win at the fourth attempt.

German Baur, who was a standout in the hard-fought victory, said: "The second half was pure heart, pure fight.

"I've not been here for a long time but I think that's what Celtic are all about and we showed that in the second half, the whole game. This win feels unbelievable because we deserved it, we fight for it."

Celtic had only won three of their previous 10 matches in all competitions and manager Martin O'Neill and his squad faced increasing scrutiny of their performances.

The microscope was particularly on their European campaign, as Celtic stared at a club record fifth straight defeat in continental competition before O'Neill's triple substitution after an hour against Besiktas.

"The team is really really close together," Baur explained.

"We know we had a tough couple of weeks but you can feel it in the training sessions, how the team is working together. The feeling, the believing is always there and so it was today on the pitch as well.

"We want consistency, but we should look match for match. But we know what we're capable of now, we know what we can do, how we can fight, how our game can look and that's what we have to show week for week, every three days."