Nothing in this red-band trailer for Unfinished Business (20th Century Fox, 3.6.15) is even remotely amusing, much less “funny.” Why would a couple of seasoned (i.e., desperate) businessmen take a village-idiot type on a business trip to Berlin unless he they had decided he could probably help out? The obvious idea is to appeal to knuckle-draggers. Canadian director Ken Scott popped through with Starbuck, and then bonded with Vaughn when they made Delivery Man, the DreamWorks-financed Starbuck remake. Vince Vaughn, Tom Wilkinson as the older terrified guys, and Dave Franco as the monkey. Costarring Sienna Miller, June Diane Raphael, Ella Anderson, James Marsden.