Former Chelsea coach Ray Wilkins thinks that the Blues might have already handed the league title to Manchester United by selling them midfielder Nemanja Matic.
The Serbian made a stunning league debut for United in the 4-0 win over West Ham, and Wilkins thinks he can lead Jose Mourinho's side to the league title this season.
"What an amazing impact that was yesterday from Nemanja Matic," said the former Chelsea assistant boss.
"I am a Chelsea supporter, I buy my season tickets at Chelsea, and I want to know whose educated decision that was to sell Nemanja Matic to Manchester United for £40m because it certainly wasn't Antonio Conte's.
"As a Chelsea supporter, I want to know who made that decision. After winning the league with such a devastating midfield duo of [N'Golo] Kante and Nemanja Matic, why are we selling one of them?
"Yesterday you saw what Matic can do. It could cost Chelsea the league and give the Reds the league."