New York Knicks star Carmelo Anthony’s sprawling rental at 1212 Fifth Ave. is going on the market today for $12 million — though his lease doesn’t end until Aug. 1.

The five-bedroom in a renovated prewar condo building is a roomy 4,000 square feet. The listing broker is Lisa Graham, of CORE.

Anthony and wife LaLa have bought an $11 million unit at 508 W. 24th St. in architect/developer Cary Tamarkin’s new 10-story building, as Gimme Shelter exclusively reported.