Brown: Geo is not bigger than Hull
The former Barcelona and Manchester City man started the match at the KC Stadium, but was substituted early in the second-half, and reacted angrily to his premature exit.
And former Bolton assistant Brown says he will not tolerate a repeat performance of petulance from the veteran playmaker.
"He will never do that to me again. Why? Because I'm the manager," he said.
"Geovanni is not bigger than this football club, simple as that.
"I didn't think he was having a positive impact on the game and when he had a chance to score he didn't even get a shot in. His first touch was worse than mine!
"Our match winner on Thursday in the FA Cup was Nicky Barmby and I thought it was a chance for him to come on and have a chance in the same position. And, as I saw it, he did have a positive impact on the game.
"I'm here to make big decisions. If they [the fans] don't like it, there's nothing I can do about it."