The Norwegian’s poor record in Europe since his appointment 18 months ago has raised serious doubts over his credibility in the job.
Bookies Paddy Power yesterday shortened the odds on David Moyes as the SPFL champions’ next boss to just 2-1 following his sacking by Real Sociedad.
He said: “I think criticism of Ronny is unfair, of course, because when he gets criticised, I get criticised, because we’re a team.
“So, we take the criticism, try to turn it into a positive and drive us forward. Ultimately, you are always judged on your results in the long term, but, along the way, you would like to think you’ll be judged on the performances.
“I’m sure the club will stick by the manager. They’ve done it in the past, they are not known as a club that hires and fires coaches.
“I don’t think that’s the way forward. We believe we’re on the right track and there are always bumps along the way. When you come to the setbacks and obstacles, you’ve got to keep believing in what you’re doing. As long as everyone sticks together, we think we’ll get where we want to go. It takes time.
“The coaching team watches re-runs of games and the goals we conceded, constantly trying to get better. But we have got the way we want to play. We might slightly vary it in certain matches, but we are not going to go five at the back, four in midfield, one up front and kick the ball up the pitch.
“Of course, our approach can get us into the Champions League next year – definitely. But we have to get better at what we do.
“I don’t think Europe is twice as quick as Scottish football, but it is more challenging. You are up against teams who are top of their domestic leagues or have won their domestic leagues. So it’s harder to do it, but that’s the challenge. We have got to get better at it. I think we are and I think we will.”
Asked if he believed Celtic are capable of beating both Ajax and Fenerbahce, Collins answered: “I’m confident we will give it every single bit of energy and everything we’ve got to try to achieve it.