If Valdez stick in the line-up and becomes an everyday batter, DH seems to be the best spot for him.
For that to happen, Turner would pretty much have to go to 1B, which squeezes Casas before he's really had a chance to prove himself.
I guess we could totally give up on middle IF defense and play Valdez/Arroyo at 2B and Kike/Arroyo at SS, but that seems too scary.
You can't stick Valdez in LF with the way our OF is playing, right now, and our best defensive OF'er (Kike) playing SS.
If it was closer to the trade deadline, one could imagine some sort of trade to move some pieces around, but that just doesn't happen in May.