A Young Kanan Jarrus Can Show Up On The Show
As mentioned,, you can run into a number of different people in the Outer Rim, such as soldiers, drifters, and smugglers. That third category is especially true, and it just so happens that a Rebels character was a smuggler during this period in the Star Wars universe. During this time, Jedi Kanan Jarrus (who was originally named Caleb Dume) was in hiding after the Great Jedi Purge. But he eventually met and became a partner to smuggler and thief Janus Kasmir.
Kanan and Kasmir pulled off various jobs before they parted ways and Kanan joined up with the rebellion. So it would be very easy for Clone Force 99 to run into a younger Kanan at this point. It’s hard to say, at this point, if The Bad Batch will feature any Jedi, so Kanan would provide a Force-wielder’s presence, even if he is trying to conceal his Jedi upbringing. His presence would also help to emphasize the fear that surviving Force-wielders feel in the aftermath of the Clone Wars.