It's a good signing, league minimum so it's a small cap hit for us and he can fill the 6th or 7th spot. Basically you're going to have one of the rookies make the team also (Corrente, Taormina, or Eckford) and one of White or salvador gone.
I still think that Urbom needs some time in the AHL. Main reason I think this is because of the memorial cup, when Brandon was playing London, Urbom was rarely on the ice when Hall was. So, if he wasn't ready to play against the most NHL-ready player in that tournament, why would he be able to play in the NHL this year? Just a thought.