Caldwell says he tries to protect his players from the worst of any abuse they may suffer.

As a former Celtic captain and Scotland international, Caldwell says he has experienced criticism throughout his career and had the help of experienced managers to guide him.

“I’m fortunate that negativity fuels me,” he added.

“I’ve kind of had it my whole life. I know what that negativity feels like and I know what you need to do to get through that, and that’s why I stick up for players so much when that criticism comes, because I know they need support at that moment.

“They need people to get around them – I was fortunate I had good people, I think of times where Tony Mowbray, Gordon Strachan, Roberto Martinez, Walter Smith, those top managers, helped me in difficult moments.

“So the negativity for me is no problem whatsoever. There is no-one that’s going to put more demands on me than I do myself.

“But for the players who are younger and who haven’t experienced that, I want to try and protect them.”