7:44pm: The two-year deal is worth $1.9MM, according to Mike Klis of the Denver Post (on Twitter).
The former undrafted free agent originally caught on with the Texans in 2010, and he soon found a home in Denver thereafter. The former Wyoming standout spent four seasons with the Broncos, making 54 appearances. He was relatively productive in 2012 and 2013, nearing 400 snaps in both campaigns while compiling a combined 40 tackles. He found himself in a reduced role in 2014, as Unrein played only 46 snaps in eight games.
Unrein reached restricted free agency last season, and he ultimately accepted the Broncos’ tender at about $1.4MM. Members of the Broncos organization, including general manager John Elway, had previously expressed interest in retaining Unrein for 2015.