I have Clement on one of my fantasy teams and I think for a lot of fantasy teams he should be a solid fifth starter until you can pick up those Mark Prior's when they come along
. If the Cubs start to get hot, which they just might start to do soon, Clement should suffer less 5 and 6 ER games as the motiviation to pitch well into late innings rises. If this is the case, his ERA at the end of the season will lower slightly to around the 3.50 line with a slightly lower WHIP around 1.1. It seems to be a rule pitchers seem to do better with offensive support (exception being the Rockies of course). But, if the Cubs remain miserable(no offensive support), his ERA wil remain around the low 4.00's with the 1.26 WHIP he's sporting now.
So is he worth it? Definitley yes if the Cubs offensive heats up. If not, he's an average fantasy 5th starter.
On the subject of the Cubs, if, and I say IF, this Mark Prior fellow lives up to his billing, look for a huge season turnaround, perhaps even flirting with the playoffs. I can tell that the Cubs WILL be playing better the rest of the season, as it was only a matter a time before solid veterans Crime Dog and Alou do what they always do. Their big three pitching now: Wood, Lieber, Prior, will do more than keep them in every game they pitch. With Clement, that makes a pretty spetacular 1,2,3,4. If Cruz comes around, or they find a solid 5th starter, the Cubs should put on one hell of a show the rest of the season.