The expensive free agent pickup will undergo surgery on his torn triceps and miss 3-6 months. There was some hope Warren could rehab the injury without surgery.
The Broncos are holding out hope Warren could return in mid-November, but that seems like a longshot. They will probably need his roster spot eventually with no guarantee he will actually be able to help them this season.
Warren also missed last season with a hip surgery. Fellow starting defensive tackle Marcus Thomas is also hurt and could miss a few weeks to start the regular season. Kevin Vickerson and Brodrick Bunkley look like the starting defensive tackles now.