As an Oil fan I would love this guy. Unfortunately our ... well lets just politely say "foolish" GM made a trade this off-season that has distorted the market for defense. We simply don't have the assets we are willing to give up to convince the Avs to deal. I figure every conversation has "but Hall for Larsson" in it somewhere.
With that said, I don't understand why everyone is convinced the Avs need to trade this guy. Avs have $7M cap space. Once they sign Barrie, they only have one roster spot to fill with the left-over cap space. I am definitely not knowledgeable regarding these proceedings but I would be surprised if Barrie got awarded $6M+, leaving at least $1M to sign the final roster spot. With no major raises in the immediate future that I can see (not sure on the trajectory of future Av's RFAs), this leaves the Avs with a couple years to make the decision. If they need to clear cap space in the future, they definitely can by making this move then.
This of course makes me quite sad, because the Oil will likely not get that final piece they require to get them over this abysmal hump.