CALLUM McGREGOR admitted there was no hiding place for the Celtic players after the Champions League shocker.
The Scotland midfielder was in a state of shock after the 3-2 aggregate exit against AEK Athens in the Greek capital last night.
But he said: “We can only blame ourselves. Obviously, everyone is massively disappointed and it’s a hard one to take.
“When you dominate over two games and don’t go through, it’s difficult to accept.
“Defensively, we have to do better to stop crosses and put our bodies on the line when the ball is in the box. Over two legs, they played counter-attacking football really well.
“We caused our own problems. No one is pointing fingers. It’s a collective.”
McGregor refused to get drawn into the controversy over absent team-mate Dedryck Boyata.
The Belgian defender remained in Glasgow claiming he was injured and couldn’t possibly play in the crucial encounter.
His agent, though, left everyone convinced the centre-half was disappointed at being denied a £9million move to Fulham and wasn’t prepared to risk his future.
McGregor admitted the squad was “disappointed” not to have him in Athens, adding: “Dedryck’s situation is not for the boys to discuss.
“The way he’s dealt with it is down to him. As a team, we’re just disappointed he wasn’t here.”