First of all, I think it's ridiculous we trade Kaberle ... but I've already conceded that's what Burke will do. Burke will have to somehow address losing the lone puck moving defenseman on his team ... I'm not even gonna try to guess how he does that.
That out of the way, if You were Chia, who could you part with?
I like Krejci, but with Savard already out of the picture, and Seguin clearly not ready yet, there's no way he deals Krejci. He needs Krejci and Bergeron down the middle in the playoff. So Krejci won't go.
Seguin isn't doing much for Boston at the moment, and he's been a healthy scratch for a few games. In an ideal world, if Savard wasn't injured, Seguin should probably spend this season in the OHL instead of NHL. Losing Seguin won't hurt his playoff chance much for THIS season. It will obviously hurt his team down the road ... but that doesn't mean he won't trade Seguin no matter what. I think it's highly unlikely he trades the 2nd overall player he just picked, but it's not impossible for a good enough package.
Rask is another player who losing him won't hurt their team's future. Rask took over as #1 last season, but Thomas' re-taken the #1 role, and Thoma's got a long and heavy contract that is un-movable. They are stuck with Thomas for the next 4-5 years anyways. Again, if they get a good enough package, I don't think Rask is out of the question neither.
Beyond that, Colborne, Caron are possibilities, but those would be rather soft offers for Burke. Hamil, Wheeler SUCK and won't even get the conversation started. Burke very reluctantly took picks in the Versteeg deal but don't count on him taking only picks in return for his biggest trade asset ever as a Leafs GM.
Unless we get back 1 of Seguin or Rask, which is highly, highly unlikely, I don't think I can be happy about this deal. That said, pending UFAs only have so much trade value.