May 14 (Reuters) - Citigroup's Titi Cole, a top executive in charge of implementing its sweeping restructuring plan, is leaving the bank, an internal memo seen by Reuters showed on Tuesday.

Cole, as the head of legacy franchises, executed the third largest U.S. lender's plan to simplify the firm by completing the sales of consumer banking businesses in nine non-core markets.

(Reporting by Lananh Nguyen in New York and Manya Saini in Bengaluru; Editing by Krishna Chandra Eluri)