Editor’s note: This is the seventh in a series of NFL draft previews as it relates to the Broncos. Previous previews: quarterbacks, running backs, wide receivers, tight ends, offensive linemen and defensive linemen. Today: edge rushers Broncos’ in-house moves: none Under contract: Nik Bonitto (two years), Jonathon Cooper (one year), Baron Browning (one year), Thomas Incoom (two years), Ronnie Perkins (one year) and Durell Nchami (two years) Need scale: 8.