It's an opportunity to audition and possibly earn himself a trade out of there.
Cousins: at the end of the day this is Robert's team ... He is the franchise quarterback— John Keim (@john_keim) December 11, 2013
Cousins has won his only career start, going 26-for-37 for 329 yards, 2 touchdowns and one interception in a 38-21 win over the Browns last season.
Brian Hoyer was doing well with his opportunity in Cleveland this season, before tearing his ACL. We'll see what Cousins can do.