Joe Smith?

Rumors have it the Cubs are looking at a deal with the Angels for Joe Smith.  Since his early days as a modestly successful closer with the Indians and the Angels, Smith has settled in as a submarining setup guy.  He is pretty much a journeyman specialist in the Cubs scheme of things.  Hard to figure this one out.  The Cubs already have two players at AAA who should be on the ML roster and a third on a rehab assignment.  Not to mention carrying one pitcher too many.  Granted Matusz is expendible, but who else?  Surely the Cubs have not yet come to terms with Nathan being kind of a bust, but things are getting a little crowded right now.  Lets hope the deadline comes soon without any really dumb, cute moves.