Juventus coach Max Allegri admits he had a colourful time with Cagliari.

Allegri discussed some of the club presidents he's worked with during his career.

"I had a good rapport with all the Presidents I worked with. Silvio Berlusconi used to say 'If you are the teacher, then I am the Professor.'

"As for Cellino, after 1,000 washes our towels had become purple. When the President saw them, he put one in the opposition locker room.

"He also cannot abide to see the number 17, ever. In the squad list we never had a 17 either, so we always went from 16 to 18."