He's a tight end who went to the University of Central Missouri. He'll be on the practice squad.
His new Chiefs bio reads:
Cosby (6-3, 245) originally entered the NFL as an undrafted rookie free agent with the St. Louis Rams in 2011 where he spent time on the club's practice squad roster. He signed with the Green Bay Packers on July 30, 2012 but was released before the start of the regular season.
Cosby played collegiately at the University of Central Missouri, starting 14 games as a senior, hauling in 71 passes for 970 yards (13.7 avg.) and 10 TDs, all of which set single-season tight end records for the Mules. He finished his career as Central Missouri's all-time leader among tight ends in receptions (141), receiving yards (2,146) and receiving TDs (20). Cosby prepped at Lincoln Prep High School in Kansas City, Mo.
This concludes your Chiefs practice squad news for the day.