Chelsea boss Rafa Benitez expects John Obi Mikel to be respectful to ref Mark Clattenburg for their clash with Swansea City tomorrow.
It will be Clattenburg's his first game in charge of the Blues since he was cleared of any wrongdoing in a race storm last year.
"They are fine, I think they will shake his hand, I don't see any problem," said Benitez, who is expected to start both players.
"They are professionals and they know their job. Hopefully everyone will forget and we just concentrate on the football."