Yonghong Li and his consortium have plenty of work to do to reassure AC Milan's supporters after two years of ownership strife.
Confirmation of the deal -- the first time in 31 years that the Serie A giants have changed hands -- came after almost two years of negotiations.
Juve announced that Dybala, last season's top scorer with 23 goals, had put pen to paper on a new deal.
Juventus defender Leonardo Bonucci has suggested he is open to a move to the Premier League by telling So Foot that the division "fascinates" him.
Izzo, 25, was given the suspension and a €50,000 fine for failing to report match-fixing during his time at lower-league club Avellino.
The delayed sale of AC Milan moved a step closer to completion after the leader of the group buying the club arrived in the Italian city.