I'd possibly move Walker even to New Orleans, but I think you have to at least get Bledsoe back as he would at least be an adequate fill in for Walker. But if you get Bledsoe then you can't get Ball so I'd consider something like Walker, Edwards, Green for Bledsoe, Redick, Hayes. Gives Boston another potential young talented big guy and a lesser offensive though better defensive PG to fill in for Walker in the short term.