Here are couple of options:
1.)Trade Jr to an American League team (where presumably, if he didn't have the wear and tear on his body playing D he could DH for another couple of years) for a good young pitching prosepect or a front line starter. With his departure put Freel in center (he was a one man highlight film in 06) Denoforia in right/left and Dunn in Right/left.
2.) Keep Jr and put him in left, Freel in center and Denorfia in right. Unload Dunn for a good young pitcher (I would also say "or a front line starter but I wonder what WK could get for all those Ks and a batting average lower than Dunns weight.).