Makhai Johnson, 18, of Brooklyn, was arrested on May 27 in connection with the killing, according to the NYPD.
Johnson faces charges of murder and two counts of criminal possession of a weapon.
Police found the teen with a gunshot wound to the head. He was pronounced dead at the scene.
The killing shocked family members, teammates and coaches, who remembered Harps as a talented athlete with a bright future.
In the weeks following his death, loved ones held vigils, memorial events and a
tribute football game in his honor while urging anyone with information to come forward.