The Chelsea boss was sacked on Tuesday morning following his side’s 3-0 Champions League defeat against Juventus, and a club statement claimed he has paid the price for recent results ‘not being good enough’.
But Newcastle manager Alan Pardew admits he can’t quite believe the decision.
He said: “I’m astonished really. It just goes to show how precarious we are as Premier League managers. You can’t take anything for granted.
“The shock that should be there from the fans and media should say something to the owner of that club. I think it’s the ninth manager there in so many years and it’s just not fair.
“He (Di Matteo) has done absolutely nothing wrong. The philosophy was to change the look of the team, which he has tried to do, but that doesn’t happen overnight.
“He won two competitions in less than a year. It’s unbelievable. He should walk straight into another job, which will probably be someone else’s misfortune, unfortunately.”