The Kansas City Chiefs added versatile tight end Kevin Boss to bolster the position in the offseason. Boss was supposed to share time with Tony Moeaki and give quarterback Matt Cassel another target in the passing game. Just four games into the 2012, Moeaki will now have to carry the load.

According to Adam Teicher of the  Kansas City Star, Boss has been placed on injured reserve with a concussion. Per the report, Boss was told by doctors that they would not clear him to play this season.

Thankfully for the Chiefs, Moeaki looks healthy after tearing his ACL over a year ago. Unfortunately, the Chiefs could have used a quality player like Boss to get back on track after a 1-3 start.

Concussions are a scary thing, and it makes sense to give Boss as long as he needs to fully recover in hopes he can return next year at full strength.

In other AFC West news:

 

Kansas City Chiefs

Teicher also reports that the Chiefs are trying to solve their turnover issues. 

 

Denver Broncos

Jeff Leglold of the Denver Post says the Broncos have a big job on Sunday with the Patriots offense running full tilt. 

Sam Davis of the team's official website reports that tight end Virgil Green is back from his suspension and motivated.

 

San Diego Chargers

Michael Gelhken of the U-T San Diego reports that the Chargers will sign veteran cornerback Chris Carr to a one-year deal. The transaction will be processed today. 

The team's official website announced the launch of the NFL's first military fan club. 

 

Oakland Raiders

The Contra Costa Times reports that the Raiders fell two spots to No. 28 in the AP's NFL power rankings.

Jerry McDonald of the Contra Costa Times reports that everything is going to plan in Darrius Heyward-Bey's return from a concussion.