Pens interested in Witt?

According to this article, the Pens may be interested in acquiring Brendan Witt from the Washington Capitals. Witt would shore up the defensive corps. You'd think that the last thing that we'd want to do is acquire a member of the D from the Capitals, but Witt is averaging 23 minutes per game and is a plus two for the season. Not sure who we'd be offering in return. Probably no one from the big club roster, unless they could find someone to take Pirjeta.