Chris Sutton last night branded Celtic boss Neil Lennon 'delusional' before admitting that the pressure is mounting on his old teammate.

The Hoops suffered a crushing defeat to Sparta Prague in the Europa Legaue, which sent the Glasgow outfit tumbling out the competition.

A Green Brigade protest called for Lennon to be sacked this week and after images appeared of the banner outside Parkhead, Sutton hit out at the fan group.

But following last night's display, the Hoops hero believes his former teammate is in trouble.

He told BT Sport: "If I'm honest I thought that Sparta Prague were the better team throughout the game. 

"This is a Sparta team who have lost four out of the last five games, this is a team Celtic should be beating. 

"They have been humiliated over two legs. 8-2 was the score over two games. 

"Neil Lennon now is under severe pressure. This is a team who have conceded 21 goals in the last nine games. They haven't stepped up in the big games. 

"They look disjointed, disorganised and, he's my mate, but he's in big trouble. I can't defend that - it was a hopeless, hopeless performance. 

"I know that the board have backed him, but they have a decision to make. The last time a (Celtic) manager was on this bad a run was Tony Mowbray. Ronny Deila failed in Europe too. 

"This isn't the Champions League though, this is the Europa League and for Celtic to be out after four games isn't good enough. 

"This time last year Celtic beat Lazio and they qualified after four games. They've regressed and he's in trouble. 

"I'm not sure it solves the problems if he does go. It's a huge decision for the board to make. He's won nine major trophies as Celtic manager. Do they trust him? 

"I don't know what's been going on behind the scenes. Whether Peter Lawwell has seen enough with what's going on in the training ground to trust him. 

"The fact of the matter is the results have not been good enough and it's been all season. It's been on Neil Lennon's watch.

"You can't get knocked out the Europa League after four games. It happened to Ronny Deila and I don't know where Neil goes from here. 

"He needs a reaction. But I watched his whole interview (after the match) and some of the stuff he was saying, in my opinion, was delusional - and he's my mate!

"He got a lot wrong about tonight. I can't stick up for him on the evidence of what we've seen this season."