Chelsea sold both Oscar and Mikel to the Chinese Super League this month.
Oscar earned the Blues a Chinese record £60million – but the club are yet to invest the money on any new squad players.
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Diego Costa was also offered a £30m-a-year contract to quit Chelsea for China – only for the striker to pledge his commitment until at least the end of the season.
And Conte admits he is disappointed Oscar and Mikel decided to leave.
Antonio Conte says he is sorry both Oscar and Mikel wanted to leave Chelsea
John Obi Mikel left Chelsea for China this month
“When you start the season working with a group of players, you try to create a link between the players, me and the staff, and for sure we are sorry if someone decides to go away,” he said.
“The same for example with Oscar and Mikel, but we know this is football and we are prepared for every situation.”