Inter Milan legend Marco Materazzi has spoken of working with Manchester United boss Jose Mourinho.

Materazzi says Mourinho is the best coach in the world.

He told Gazzetta dello Sport: “How can you talk of the best Coach in the world, when there are four that are more or less at the same level?.

“Jose Mourinho, Guardiola, [Carlo] Ancelotti and [Marcello] Lippi. And, just one step below them, [Antonio] Conte and [Jurgen] Klopp.

“I can tell you that Mourinho and Lippi are the best, in my opinion, not just because of their self-explanatory results, but because I experienced them from close-up. But I understood who Jose was before even meeting him.

“We'd just been knocked out of Euro 2008 on penalties against Spain. He didn't have my telephone number and I wasn't [Diego] Milito. It was possible that I was going to leave Inter. And I received a phone text: 'I'm waiting for you so we can start winning together'."