Referees do not believe Hawk-Eye's explanation of how goal-line technology malfunctioned at Villa Park on Wednesday after it passed all of its pre-match tests — including pushing the ball behind the posts.
Sheffield United were denied a clear goal in the first half of the 0-0 draw when Aston Villa goalkeeper Orjan Nyland fell backwards into his own net while holding the ball behind the post.
Hawk-Eye said the Goal Decision System's seven cameras were obscured by the goalkeeper, a defender and the goalpost, but refereeing sources say they are 'confused' by that claim.