"I am touched by all these people wanting me to ride for their nations," said Nicholson, before adding "do you think the British would have me?"
When pressed for a more serious answer, Nicholson responded: "On a serious note, last year marked 30 years since my first appearance on a team for New Zealand at the Los Angeles Olympics in 1984.
"It has been an honour and a privilege to represent my country on every occasion but if the situation warrants it, then [switching allegiances] is something I suppose I would have to consider. I am not quite sure I could get a license to ride for other nations but I can quite easily get a British passport. I consider everything."
Despite the highly publicised spat leaving his future with the New Zealand team in limbo, Nicholson said he did not regret his actions in France.
"As far as my federation and my problems with them, I do not think that I could have done anything differently with that. I got myself in a bit of trouble, but I was concerned about my horse Nereo and his welfare is my priority and I would never compromise on that," he said.