Alvaro Bautista has long been confirmed on a Gresini Aprilia .
It is unclear as yet whether Marco Melandri will return to MotoGP with Aprilia , or instead choose to stay in the World Superbike paddock .
Alvaro Bautista has long been confirmed on a Gresini Aprilia but it is unclear as yet whether Marco Melandri will return to MotoGP with Aprilia , or instead choose to stay in the World Superbike paddock .