Ken Bates has threatened to report Neil Kilkenny to the Football Association as the row between the pair threatened to overshadow the build-up to Leeds' home Carling Cup clash with old foes Manchester United.
Kilkenny, 25, left Leeds after failing to agree a new contract in the summer and scored for his new club Bristol City on his first return to Elland Road on Saturday.
The Australia international ran gesturing towards the directors' box and blew kisses at Leeds chairman Bates and chief executive Shaun Harvey after he had scored.
Kilkenny said after the game, which Leeds won 2-1, that his actions were inspired by having been ignored by Bates and Harvey before the game, as well as comments from Bates that he had joined "a smaller club".
Bates told the Yorkshire Evening Post: "He can't justify or excuse his behaviour.
"It shows exactly why we weren't sad to see him go.
"Neither myself or Shaun ever go down to see players on match days. Why would we?
"The fact is he asked for a wage which we didn't think he was worth.
"He's a petulant sod with big ideas of himself. We might report his behaviour to the FA because we've got CCTV footage of it."
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