The former England and Manchester United midfielder got his marching orders after protesting at a decision to send off one of the young players.
He told Jonathan Ross: "I was watching the kids play the other day, it was the game just before they were playing. And I was watching and it was still the same club, it was the younger kids of Romeo's club, and they're playing in the game and there was a penalty given. And the kids are seven-years-old and he sent the kid off. And I was like, 'Come on, he's seven-years-old, referee, you can't send him off' And he looked at me and was like, 'Yes, I can.' And I was like, 'Ok, well, you can't, he's seven-years-old'
"And he came over and gave me a red card. He told me to get out of the park. For real. The gate was only 20 yards away and I waited and went back in when my son's game was on."
The star, who now plays for LA Galaxy, said his children were "happy" in the United States and did not rule out having more children with his wife, former Spice Girl, Victoria.
He told Ross: "We might have one more or two more, you never know. We're not thinking about it yet, but if it happens, great. We're enjoying the kids as it is. It's always a thought."