Actually actually, it was Colborne + a 1st + a cond 2nd if he re-signed or if bruins went to Cup finals which they did. Colborne seemed like a so-so prospect even then (to me anyway) but not garbage either.
I suspect we'd get very similar offers from contender, maybe even a little higher, and I would absolutely do it.
edit : btw, I too think that we'll just re-sign Markov, probably to a dangerously long deal which we will come to regret. Timing is perfect for trading an aging D for young talent : we ain't contenders and we have like 3 youngsters close-to-ready for NHL duty in Beailieu, Tinordi and Pateryn.
So we SHOULD trade him, but sadly we won't