It's a matter of adressing needs. Seabrook will be a top 3 blueliner in the NHL. He will be with the Hawks full time within 2 years, then continue to progress.
There is no way the Hawks do this deal though.
I've been fairly dissapointed with Seabrooke's vision and descion on the ice. Each time he was involved in the play, I didn't really liked his game overall. Are you sure this guy is really top3 material? I didn't saw too much of him so I'm far from being sure that he is not really good.