The FA 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.
At his Champions League media conference on Wednesday 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.
