Denver Broncos LB Nate Irving appears to be the leading candidate to start at middle linebacker at this time, but the team is expected to select a middle linebacker during the 2014 NFL Draft.

Footballguys View: We’re expecting the Broncos to add a middle linebacker in the first three rounds of the 2014 NFL draft. That rookie will compete with Irving and Steven Johnson for the starting job.
Broncos | Nate Irving appears to be starter for now