The problem is that you are not competing with Ottawa in this trade, but with others suitors. Somebody will overpay for him.If Karlsson was locked up for 5 years and was coming by himself; the package would start with Skjei and Hayes.
He's an impending UFA.
Bobby Ryan will be attached.
He controls his destiny. He can decline any extension talks and just wait a year for UFA status. He cannot be forced
Ottawa is broke.
He will be traded for pennies on the dollar.