The lawyers for one of Gov. Rod Blagojevich's leading fundraisers are asking for tapes of conversations between the government's star witness and a former Chicago alderman. Tony Rezko is charged with pressuring businesses hoping to do work for the state to make campaign contributions. He has denied any wrongdoing. Prosecutors agreed Tuesday to hand over tapes of conversations between lawyer and businessman Stuart Levine and Edward Vrdolyak. The former alderman is charged in a separate corruption case. Levine has pleaded guilty to fraud and is a likely witness at Rezko's trial.