Outsiders need not apply. Wells Fargo's media review involves roster shops only, pitting Omnicom Group's OMD against Interpublic Group's UM. OMD plans and buys traditional media, and UM handles digital media. The consolidated prize is considerable: the bank spends about $170 million in media annually. The jump ball comes a year after Wells Fargo shifted its creative business from DDB to BBDO, and a selection is expected in April.