Celtic boss Ronny Deila says his players were scared in their 2-0 defeat to Malmo which ended their hopes of Champions League football.
Goals from Marcus Rosenberg and William Carvalho ensured the Hoops lost 4-3 on aggregate but it was the nature of the display which disappointed the Celtic manager.
“We performed not even close to what we can,” he told BT Sport.
“We have played very well in many games this season but today we looked scared, uncomfortable on the ball and stressed. But that is my responsibility.
“We have to go through what happened and learn from this.
“We have to get better. We were close but when you have a performance like this you don’t deserve to get through. We have to find a mental toughness.
“If the performance had been fantastic and we’d lost we can deal with that but it’s even tougher to deal with the disappointment with a performance like that.”