I just listened to Dreger's segment on TSN radio from yesterday, the hosts asked him about some rumour out there about the Avs being interested in Markov. Dreger said he's hearing the Avs are very eager to land a #1 or at the very least a #2 defenseman and Markov would probably be a #2 on the Avs so he thinks they would probably inquire about him. He also said Sakic and Roy are "scouring the market" right now and they might be paying close attention to what's going on in Buffalo and their defensemen. Lastly, he said Roy has learned to be very patient and there is a calmness around the Avs organization now. If there's a right fit, no doubt the Avs will make a play but they also might be willing to wait until the summer and see what happens at the draft when teams have a lot more flexibility.
So they could do something at the deadline or they might wait until the offseason.
It's all speculation but I still like hearing that they really want to add a top pairing defenseman (if Dreger knows what he's talking about).