Report: Broncos' Anderson to have knee surgery, likely headed to IR

Denver Broncos running back C.J. Anderson is undergoing arthroscopic knee surgery and will likely be placed on injured reserve, a source told Ian Rapoport of NFL.com.

An IR designation would force Anderson to miss at least the next eight weeks before the Broncos have an opportunity to add him back to the active roster. Whether his recovery timeline gives him the chance to return at that point, or at all this season, may depend on what doctors can uncover during the procedure.

The arthroscopic surgery will help determine whether Anderson is dealing with a full or partial tear of his meniscus after sustaining an injury Monday night against the Houston Texans, ESPN's Adam Schefter reports.

As it stands, the best-case scenario appears to involve Anderson being cleared to return either prior to or during another Denver playoff run.

Fourth-round rookie Devontae Booker will step in as Denver's primary back for the time being, looking to build upon the success he enjoyed in a rotational role to start the season.

The former Utah standout averaged 4.8 yards per carry across the first seven games of his NFL career, with his most impressive showing being the 83-yard, one-touchdown effort in a win over the Texans.