The Football Association have written to Chelsea coach Avram Grant to ask him to explain his remarks about referee Steve Bennett.

Grant called Bennett's integrity into question after Manchester United's 2-0 win at Wigan last Sunday earned a 10th Premier League title for Sir Alex Ferguson.

Chelsea, level on points with United before kick-off, could only draw at home with Bolton.

But Bennett came under fire for not awarding the home side a penalty for handball and then opting not to send off Paul Scholes for a second bookable offence when he fouled Wilson Palacios.

Grant said: "I told you that I believed in the tradition of the fair English game. I will not say anything against it. But what happened is what I expected.

"In England there are very good referees, but there are some - a few that you can influence, like you saw.

"I think in our game against Manchester United at Old Trafford, the referee [Mike Dean] influenced the result for sure. We know that.

"I think the red card for Mikel John Obi in that game should not have been a red card, I think that Paul Scholes should have had a red card on Sunday and Wigan a penalty also.

"But it is finished. I congratulate Manchester United."

Grant has until May 28 to reply.

The two clubs meet in the final of the Champions League on Wednesday.

TeamTalk / Eurosport