[Unfortunately for Grievous, he doesn't have any sensitivity to the Force, although he has his own instincts and some nagging feeling of some things being off. He doesn't question them, and that was part of the manipulation.]

Excellent. Others have been telling me of this. Of there being a purge of the Jedi. Of there being maybe only one of them remaining in these future times.

Soon then, the galaxy will be free of their influence.