The Broncos aimed to welcome back Drew Sanders for a full season. But the promising defender got hit with a new ailment.

Denver Broncos linebacker Drew Sanders injured a tendon in his foot Saturday in training camp. The injury will cause him to miss significant time and potentially put his availability for Week 1 in question, according to NFL Network's Ian Rapoport.

Sanders, who was carted off the practice field on Saturday, is set to miss an " extended period " of time after suffering a tendon injury in his foot, NFL Network's Ian Rapoport first reported Sunday. He is not expected to return before the Broncos kick off the regular season against the Tennessee Titans on Sept. 7.