Paul Robinson wanted Mirco Antenucci sent off.
Robinson was booked after a confrontation with the Italian, but said he was perplexed as to why the Leeds forward was not handed a straight red card during the 1-1 draw between Leeds and Birmingham City.
He said: "The player head-butted me and that’s a red card – I don’t see how he could do that and get away with it.
“I reacted but just reacted by blowing him a kiss. I’d like to see the ref’s report about that. I’ve never heard anything like that, never in a million years.
“When a player blatantly throws his head in towards you, I thought that was a straight red card."
Antenucci was booked by the referee for his part in the confrontation, with official Dean Whitestone in disagreement with Robinson's assessment.
The fact he dealt with the incident rather than missing it means it is not possible for the Football League to take retrospective action against the Leeds striker.
A red card would have been a big blow for Leeds regarding their top scorer, as it would have meant a three-match ban.
It would have seen him miss home games against Bournemouth and Brentford along with the away trip to Huddersfield at the weekend.