Chelsea manager Jose Mourinho has revealed that he is "curious" as to whether all managers will receive an apology if they are on the end of a debatable refereeing decision.

Referees chief Mike Riley apologised to West Bromwich Albion head coach Steve Clarke after Chelsea were awarded a late penalty in the 2-2 draw between the two teams a fortnight ago, but Mourinho has admitted that he has been left perplexed by Riley's actions.

The 50-year-old told reporters: "I am curious to know if people see that as a normal situation, if now on it is going to be the same for everybody. Nobody called me to apologise that it wasn't a free kick against West Brom for their second goal, or for a penalty against Everton.

"I am curious to know if Steve Bruce got a phone call, if Chris Hughton got a phone call, if Michael Laudrup got a phone call.

"For referees, if, hypothetically, they make a mistake, they are publicly exposed by their own boss."

The draw at Stamford Bridge resulted in Chelsea maintaining their position in the top four of the Premier League table.