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itigroup's global head of real estate, gaming and lodging, Matthew Greenberger, has departed the firm, according to sources familiar with the matter. Paul Ingrassia, a longtime Citigroup real estate banker, will serve as interim head, one source said. A Citigroup spokesperson declined to comment on the departure. An email sent to Greenberger's work account bounced back, stating he is no longer with the company. Greenberger joined Citigroup in 2004 and was recently part of its Investment Banking Operating Team. He advised on transactions for companies including Digital Realty Trust Inc., LifeStorage LP and Brandywine Realty Trust.