Ravanelli is convinced Di Matteo can make the most of the opportunity.
"We've played together, I respect him so much. I can say he's an amazing guy. I have already wished him good luck for this opportunity," Ravanelli told TMW.
"It's something important, a great opportunity. Among other things, the task can lead to something better, because he has nothing to lose.
"Surely if he does well he'll make it hard for Roman Abramovich."