CHRISTOPHER JULLIEN says he is not worried about the future of manager Neil Lennon, and he has backed Celtic to get back to the level of performance they showed last season.

The defender made his comeback from injury in last night’s game, but could do nothing to arrest the alarming frequency by which Celtic are leaking goals as they fell to yet another 4-1 defeat at the hands of Sparta Prague.

But Jullien was defiant about the future prospects of both his manager and his team despite the pressure Celtic are currently under.

“I have no worries about the manager,” Jullien said.

“It was a bad game but we still have belief in each other and in the coaching staff. I believe in him – 100 percent.

“He’s a great coach. He has been unbelievable since I have arrived at the club. The manager has done great work before – and he will do it again.

“I know there has not been the results on the field but we need to look out for each other.

“The manager is doing a great job, we just have to erase these mistakes and work for each other.

“I believe if we do that we can get back to the way we were. It was definitely a bad night and it’s the end of the Europa League.

“But there are some big matches ahead of us and a lot to play for. The manager has 100 percent support from the players.”

Jullien was as stumped as his manager as to why Celtic are struggling so badly at the moment.

“We have the same players as last year, and we definitely have the same staff, they are still doing a great job since the start of the season,” he said.

“If you look at the situation, mentally we might have had a slump or something like that, but it’s just something you have to work on.

“We just have to trust and believe in each other to get back to what we were doing last year. We were great.

“We wanted to win every game, we still want it, but there is just something missing.”