Johnson, 25, played in three games last season for the Chiefs, including one start. He is entering his third season in the NFL after going undrafted out California University of Pennsylvania of in 2012. He spent 2012 on the Seattle Seahawks' practice team.
McCray, 25, played in 15 games last season during stints with the Miami Dolphins and Bucs. He went undrafted out of Arkansas State in 2012.
- Paul Palladino