It would not appear as though a Christian McCaffrey trade is imminent, though the potential for a possible deal remains.
According to Charles Robinson of Yahoo Sports, the Carolina Panthers are in a "listening mode" when it comes to trade talks for the star running back, while the Buffalo Bills are in a "monitoring mode" regarding the situation:
Charles Robinson2. The whole <a href="https://twitter.com/hashtag/Bills?src=hash&ref_src=twsrc%5Etfw">#Bills</a> dalliance with McCaffrey stemmed back to when Buffalo called about him in the offseason. But that never went anywhere and it was totally dead until this point in the season. Even now, the Bills are in more of a monitoring mode than anything.