The Duke of Cambridge, in a recent interview, said he would love to attend football matches with his son Prince George in the near future but he will have to "pass that by the missus".
William, an Aston Villa supporter, said it would be "fantastic" if his 22-month-old son decided to follow the club, although "it will probably end up being that Charlotte is the Villa fan".
The Football Association president was speaking to the Match Of The Day presenter, Gary Lineker, before tomorrow's FA Cup final, where the Duke will watch Villa take on the holders, Arsenal, at Wembley.
Asked when he will take George to his first football match, the Duke replied: "I don't know, I'll have to pass that by the missus, see how I can get away with it. At the moment, being only 22 months, it's a little bit early."
William, 32, was quoted as saying by the Press Association that the responsible thing would be to allow George to make his own mind up about which team to support but he may be "quite biased".
"I'd love to go to the odd match with him in the future. It'll probably end up being that Charlotte is the Villa fan, and George will go and support someone else," he said.
William said he decided to support Villa while at school because he did not want to follow "run of the mill" teams such as Manchester United or Chelsea, which most of his friends supported.
"I wanted to have a team that was more middle of the table, that could give me the more emotional roller-coaster moments. To be honest, now looking back, that was a bad idea. I could have had an easier time," he said.