Cubs showing interest in Fuentes?

Ken Rosenthal's got some good stuff today, noting that the Cubs might be interested in Rockies Closer Brian Fuentes. This would seemingly be a nice addition by the Cubs, depending of course on who they would need to give up. Currently, both Kerry Wood and Carlos Marmol are on pace to make over 80 appearances each, and left-handed arm that is use to clutch situations could be very valuable. However, as Rosenthal notes, he's going to be an intrigue for virtually every contender up until the trading deadline.