Liverpool boss Jurgen Klopp was also asked about Newcastle having nine managers in seven years.
He said: "I am not an expert on this because I had a perfect situation with seven years at Dortmund and Mainz. In my opinion it is very important but it can work in different ways.
"I only know about the actual situation of Newcastle, not about their history or why they changed managers.
"There is something not right when you change the manager but I know Steve McClaren and I know about his quality and experience so we have to be aware."
