Former AC Milan coach Arrigo Sacchi admits he's a fan of Ralf Rangnick.

The Red Bull technical chief and former Hoffenheim coach is being linked with Stefano Pioli's job at Milan.

"I think he's a good coach, but personally I don't know him," Sacchi told Sportmediaset.

"His teams played good football."

He added: "Italy has a refusal to change. To renew it is important to have knowledge, it allows you to have innovation and courage."