The boss of a prostitution ring used by disgraced former New York Gov. Eliot Spitzer should serve at least two years in prison, prosecutors said Tuesday. In papers filed in US District Court, they argued Mark Brener earned "substantial punishment" with his role in the business and should receive the 2 to 2 1/2 years in prison that was included in his plea agreement. Brener pleaded guilty last year to conspiracy to commit a prostitution offense and conspiracy to commit money laundering. He's scheduled to be sentenced Friday. Prosecutors cited his position as head of Emperors Club VIP and criticized his contrition, saying it didn't seem sincere. "That the defendant continues to insist upon his moral rectitude and his legitimate intentions with respect to the Emperors Club raises a serious concern about the defendant's potential recidivism," prosecutors wrote.