AC Milan moved quickly to issue a statement denying any contact between senior management and Guardiola's brother, Pere, who was spotted in the San Siro crowd for Milan's Champions League match against Malaga.
But Jose Maria Orobitg told radio station TMW on Wednesday: "Guardiola isn't going to Milan? Who told you that? I am Guardiola's manager, not his brother Pere.
"Anything is possible next year. I speak to (Milan vice-president Adriano) Galliani all the time, and when I speak to him he is very friendly. We have a good relationship. Who knows what will happen in the future?"
Guardiola is currently enjoying a sabbatical year in New York after guiding Barcelona to three Primera Division titles and two Champions League trophies in just four years.
"Milan is an option, as are Manchester City and Chelsea," Orobitg added. "Pep is listening to offers and evaluating them. But Guardiola will not coach this year. We'll talk about it in June."
Speculation has arisen concerning the managerial post at the San Siro given Massimiliano Allegri's poor start to the season, with the Rossoneri only able to hold Malaga to a 1-1 draw on Tuesday.
Orobitg added: "Why was his brother in Milan? Because he represents a lot of Malaga players, why is it strange that he would go and watch one of their games?
"The press talked about it like it was a special event. He just went to watch a game of football. He is also Luis Suarez's agent, but none of the papers talked about that."
A statement issued on Milan's website on Tuesday read: "AC Milan denies the occurrence of a presumed meeting between vice-president Adriano Galliani with family or agents of Mr Guardiola, following news stories that have emerged from several outlets."