With the decision on a potential sale still unclear, Reed Business ceo Gerard van de Aast is resigning his position as of December 15 and leaving the Reed Elsevier boards. Van de Aast runs both RBI, the unit that is up for sale, and Reed Exhibitions, which the parent company is retaining. He has run the division for the past eight years. CEO of RBI UK Keith Jones will take over as acting ceo, “pending resolution of the current divestment process.”Release