The Browns placed Royer (personal) on the reserve/non-football illness list Sunday, Scott Petrak of the Elyria Chronicle-Telegram reports.
Royer has been designated to return to the team but will be required to miss at least the first four weeks of the regular season. The rookie fifth-rounder missed the entirety of the preseason due to a personal issue. It remains unclear when the tight end will be ready to return to football.