The Colts traded outside linebacker Jerry Hughes to Buffalo for Kelvin Sheppard, who started 15 games last season as the middle linebacker in Buffalo's 4-3 defense.
Indianapolis sees him as an inside guy in their system. So they now look four deep for their two inside spots with Jerrell Freeman, Kavell Conner, Pat Angerer and Sheppard.
Robert Mathis is the starter at the rush outside spot, with Erik Walden on the strong side. First-round pick Bjoern Werner is now the third outside linebacker.
The trade is a swap of two relatively recent high picks.
Hughes was a first-rounder for Indianapolis in 2010. He didn't really fit as the third end in the 4-3 and last season he didn't take off in the new 3-4 the way the team had hoped he would.
Sheppard was a third-rounder in 2011 out of LSU.