Lee Clark has vowed to turn Blues into a team the supporters can be proud of and has highlighted the importance of Saturday’s must-win clash.

Blues take on Peterborough at St Andrew’s with fans expecting them to end their dismal start to the season.

And Clark knows that anything short of a win is not acceptable.

On Tuesday his side crashed out of the Capital One Cup at Coventry City to extend their winless run to four games and the 3,900-strong away following let their feelings be known with a chorus of boos at the final whistle.

But the 39-year-old is determined to put things right on Saturday by finally kick-starting their stuttering season.

“Saturday, we need to win. It doesn’t matter how we do it, we need to win,” he said.

“I’ve said to the players, we’ve got to turn it around. It’s only us that can do it,’’ Clark said.

“I’m not giving up, we’re at a fantastic club with fantastic people, brilliant supporters and I promise we’ll turn it.

“We’ve got an expectant crowd and rightly so. We’ve got to kick on now.

“I need 11 warriors on Saturday because there is going to be a little bit of tension around the place.

“We’ve got to be able to handle that, we’ve got to be able to be positive and play our football like we have tried at Coventry and at Sheffield, but we’ve got to be able to defend.”

Clark was highly critical of his side’s defensive play on Tuesday night as they were beaten 3-2 in extra-time.

He said, that despite hours of hard work on the training field, his side were still making basic individual mistakes that were costing them dear.

For the first time this season, Blues took the lead first, but that was quickly reversed as two quick-fire goals put the Sky Blues in control.

Clark has now watched his side ship 11 goals in five games and has made it clear that things need to change,

“It doesn’t matter whether we deserved to lose it or not, we have lost it and we’re going to continue to lose games if we’re giving away the goals that we’re giving away,” he added.

“At Coventry we would have had to score four to win, three we would have had to score at Watford, and four at Sheffield Wednesday, it’s outrageous.

“The goal Charlton scored, you can nitpick and say that we could have done better because it’s not really an error.

“But the rest of the goals we have conceded this season are shocking.

“They are basic errors that we’re not dealing with.

“It’s the biggest test of my managerial career now but I’m not going to shirk away from the challenge and I’m not going to let the supporters down.

“I’m proud to be their manager and I want to be the one that delivers the success,’’ Clark said.

“The fans have been brilliant and they were right to boo at Coventry because they are fantastic fans.

“They can see the Mickey Mouse goals going in and we cannot keep doing this.

“I hope that the fans will carry on supporting us because I’m giving my all.

“I know it’s tough for them at the moment but I will do everything in my power to deliver.”

Blues are waiting to hear whether full-backs Stephen Carr and David Murphy are available for Saturday’s game.

The pair have been missing in recent weeks leading to Clark fielding a makeshift backline which ended with Jonathan Spector and Hayden Mullins both occupying their usual positions in midweek.

Curtis Davies’ ankle injury will also be assessed before Saturday.