>>113242492Probably won't. While the Siege of Mandalore arc starts just before and goes concurrently with Revenge of the Sith and seemingly will include at least one scene from it, there's no indication we'll see Grievous kidnapping the Chancellor.
It will at least be mentioned though, because it's why Anakin and Obi-Wan leave Ahsoka, Rex, and Bo-Katan in charge of the Siege. They're called back to Coruscant for what we see in ROTS
