PSG coach Carlo Ancelotti says Andre Villas-Boas needs time to overhaul Chelsea's squad.
AVB replaced Ancelotti over the summer at Stamford Bridge.
"You cannot reach your objective immediately. The change is that they want to refresh the team. The philosophy of this team was introduced by [Jose] Mourinho, who turned [John] Terry, [Frank] Lampard and [Didier] Drogba into great players. They're the same players I trained and the same players that are there now. Chelsea want to change this.
"In my last year we got Ramires, David Luiz and Fernando Torres. And this year I think they've bought a lot of players - young players - because they want to keep the team at the top." "I don't know how long Villas-Boas's changes will take, but when you change something at a football club you have to give the manager time," Ancelotti told the Telegraph.
