Phaneuf and Coburn would be an awesome pairing... for 35 games a year, a good pairing for 20 and frustrating as hell for the rest!
They would be unplayable at times... but one nights they both were 'off' it would be a a trainwreck.
But tbh I would not be against Phaneuf, only 28, consistent 40 point D man who is pretty good in his own zone.
He is a '1b' for sure... and is among the top 20 D men in the NHL to be frank... for all the stick he gets. After the big 9 it is McDonagh, J.Bo, Letang, Yandle, Kronwall, Seabrook, Ehrhoff, Hedman, Byfuglien and Phaneuf in that little tier I reckon. And he is not at the bottom of that group.
I would not mind the term being 5~ years... but amount would scare me. He is probably worth in the ~6mill range (5.5-6.5) But someone will likely give him 7. So no, do not wana get into a bidding war for him. But if a reasonable deal could somehow be agreed I would be ok with it.