Johnson (.276/.366/.499) has 16 HR's, 26 doubles and has added 2 wins above replacement for the D-bags. He's a lefty that can hit second, fifth or sixth for the Dodgers and he can produce. Granted, the outfield is a more of a priority but that Haren deal wasn't a great future move - it was a salary dump. I think the D-bags would be willing to part with Johnson for the right price and with the shortness of his contract, he won't be as big of a risk for the D-bags as far as him staying in the NL West.
It's worth exploring for Ned and the Dodgers.