Moto2 championship leader Franco Morbidelli will move up to MotoGP next season with the Marc VDS team.
Instead he will ride for Marc VDS after team boss Michael Bartholemy confirmed that Morbidelli will remain with the Belgian outfit next season as he steps up to MotoGP.
It means one of Marc VDS's existing riders, Jack Miller and Tito Rabat, will be forced to move on from the squad in 2018.
Rabat meanwhile has come under increasing pressure to retain his seat, although he has been strongly linked with a potential future with the Avintia Ducati team.
Morbidelli's current team-mate Alex Marquez will stay in Moto2 for another season, and will be joined by Moto3 graduate Joan Mir.