Sanders and Beasley are definitely both question marks for next season - especially if Daboll is gone. A new OC (if not from within the organization) might want to bring in at least one of "their own" guys, either by FA or draft at WR. Just never know with how they may need to play the salary cap (even since it'll go up), with Josh's nice new salary....
Don't want to turn this into a salary cap discussion - would just be very surprised if the WR corp is the same next season.