Let's talk about this rationally for a moment. Maddux has repeatedly stated his desire to remain in the National League, so much so that he rebuffed overtures of affection from the suddenly free-spending Orioles.
Think his hunger to play for a winner motivated that decision? The Red Sox called too, - the nearly AL Champion Red Sox - and all they got was a shrug and a wave. I'll admit, the Yankees are a different beast, but wouldn't you think if they sparked Mad Dog's interest he would have signed with them when he had the chance in 1993?
I don't have any special knowledge of this situation, but my BS (Boras, Scott) radar is going off like a metal detector in a Hip Hop dentist's office. Is there a more classic ploy in the BS lexicon than leaking supposed Yankee interest near negotiation's end?
Assuming this is a bargaining tactic, it won't be effective. What's the downside for the Cubs? If Hendry doesn't sign Maddux because the Evil Empire is willing to throw gold doubloons at the object of its lust, who can blame him? Even the Tribune Monolith looks sympathetic when compared to George and his minions, and when you add BS to the mix, the stink would be on the Yanks. There's no motivation for the Cubs to cave when the masses' fists would be shaking eastward.
I don't doubt the Yankees have interest in Maddux, and they may have tendered an offer, but I won't believe the interest is mutual until The Professor dons the stripes.