The Football Association has asked his statements to be explained by Cardiff City manager Neil Warnock at Watford.
Warnock believed Madley needs to have shipped Watford’s Troy Deeney.
Madley, who has mostly refereed at the Championship that season, has more than 100 Football League and FA Cup games to his name.
“I can’t know just why we’d Andre Marriner while the fourth , and a referee who has not refereed a game all season [as the ref],” Warnock told BBC Sport.
“Unless it’s because we are Cardiff and they state we may have a trainee or someone ?”
Deeney collided with goalkeeper Neil Etheridge while slipping for the ball in the second half.