Thursday 1 October 2015 23:21, UK
Ronny Deila accused Efe Ambrose of lacking concentration after Celtic blew a two-goal lead against Fenerbahce.
First-half goals from Leigh Griffiths and Kris Commons put the home side in charge of their Europa League tie, but an Ambrose mistake allowed Fernandao to halve the deficit just before the break.
And the Brazilian headed a second early in the second half after escaping the attentions of Ambrose.
The game finished 2-2, and Celtic boss Deila said: "When you are defending you need to keep concentration for 90 minutes and that is the biggest challenge Efe has.
"He plays 88 minutes very good but he sometimes makes some easy mistakes and today was one of them. As a defender you have to keep concentration for 90 minutes.
"I think we played well in the first half, we got 2-0 up and it was important to keep that lead into the break. I thought we would have had a very good chance in the second half, but we conceded an easy goal and that gave them energy and put us on the back foot.
"They had us for 15 minutes in the second half, they didn't create a lot but got the second goal from the set-play and it was disappointing that they scored with the two chances they had."
Deila put the result down to more than just Ambrose's lapses, saying: "In the second half I think we were a little bit too deep. We made some changes and got more into the game and we kept the ball more.
"You can see that when we believe in ourselves, and we dare to play football, we are a good team and that's what we have to do more.
"We have to really go for it and play our system and defend as high up the pitch as possible. Sometimes you have to get deeper but we have to keep the ball more."
