The 26-year-old - who was linked with moves to Manchester United, Arsenal and Spurs this summer - netted 76 league goals in just 92 games for Ajax after arriving in 2005.
But he has struggled to settle since leaving Holland for Real Madrid last January, making only 20 la Liga appearances for the Madridistas in the second half of last season before departing for pastures new.
Since joining the Rossoneri during the close-season, Huntelaar has again laboured, failing to net in his opening seven Serie A games as Leonardo's charges have slid down to an unacceptable 12th place in the standings.
And as a result, reports in Italy have already begun listing potential January arrivals and departures to help transform Milan's fortunes.
According to Il Corriere Dello Sport, Huntelaar will be sent on his way after six months for the second time in a year during the winter transfer window, possibly as a part of a swap deal involving out-of-favour Tottenham Hotspur front-man Roman Pavlyuchenko.
However, the player's representitive Arnold Oosterveer insists that the player is going nowhere.
"The sale of Klaas in January? I don't want to comment on things that are just rumours," he told Calciomercato.it.
"The truth is that Milan have not given us any signs in that respect.
"It's a difficult moment for Milan, and Huntelaar is feeling it too, but I think both club and player will come good."
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