Capitals Sign Troy Brouwer

As first reported by Caps senior writer Mike Vogel, the Washington Capitals have agreed to terms with RFA right wing Troy Brouwer on a two-year, $4.7 million contract.  Brouwer, 25, who was acquired by the Capitals on June 24th for Washington's first-round pick in the 2011 NHL Draft, scored 17 goals and had 36 points for the Chicago Blackhawks last season.
As for the deal itself, it locks up one of two restricted free agents the Caps had left to sign, the other being Karl Alzner, but does so at an extraordinary cost. $2.35 million is a lot for a player of Brouwer's caliber and this signing puts Washington only $3.5 million under the expanded summer salary cap with Alzner left to sign.  Don't get me wrong, I love what Brouwer will bring to the Capitals, but this is starting to become a ridiculous strain on the salary cap and Alzner is essential.  Where does the money come from?  This is starting to make me nervous.