The Aussie reaction to Celtic and Ange Postecoglou's title as Dermot Desmond served Premier League warning

Mark Bosnich believes Ange Postecoglou could manage one of the big hitters in the English Premier League.

And he has urged Celtic chief Dermot Desmond to insert a big buyout clause into a long-term contract to try to stop it from happening.

The former Manchester United, Chelsea and Aston Villa keeper worked alongside Postecoglou as a TV pundit in Australia.

He was convinced he’d be a success at Celtic and was delighted when the Aussie secured a Premiership title win in his first season.

Bosnich says he’s capable of coaching at the highest level and wants the Hoops board to tie him down NOW.

He said: “Ange could manage one of the big clubs in England, there’s no doubt about that.

“I don’t want to disrespect Celtic because they are a massive club as well.

“But if I were Celtic, I’d be making Ange a long-term offer now – and I’d be putting a big buy-out clause in it.

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“So if the worst comes to the worst, at least they’d benefit financially.

“The guy has done what he was brought in to do.

“If I was Desmond and the board, I’d sit him down, reward him, get him on a long contract and include that buy-out clause – because it might come to that.

“This thing with Ange has the ability to go quite far if