Denver's contingency plan at MLB

The primary storylines for the Denver Broncos this offseason have been the addition of Wes Welker -- and how Peyton Manning would distribute his passes -- the team's attempts to replace DE Elvis Dumervil as well as the situations at safety (where Charles Woodson was considered, and Quentin Jammer was signed) and RB (with the addition of rookie Montee Ball). However, there is also an important spot on defense that remains unsettled: middle linebacker.