If they really wanted Sheva to stay:
Ancelotti and the rest of Milan's crew sould speak to Sheva only in English (preferable with Mourinho's accent)to help him learn the language
and Galliani would make/vote a new law that noone in the club is allowed to speak other language than English in front of Andriy
Gallas and 2-3 more EPL players sould be transfered, to help with the situation...