The Kansas City Chiefs used a fifth round pick on DE/LB Gabe Miller out of Oregon State. It's a curious pick because some considered him a bit of a project but nevertheless the Chiefs brought him to town with the 140th selection in the 2011 NFL draft.
So where does Miller fit?
Chiefs GM Scott Pioli confirmed they're going to play him at outside linebacker after he played defensive end at Oregon State. He's making the transition from hand-on-the-ground to standing-up so he's likely not making a huge impact (outside of special teams) in year one.
On the left side, the Chiefs have LB Mike Vrabel and LB Andy Studebaker. Vrabel's future in KC isn't clear and the Chiefs haven't re-signed him, although he's an indicated a desire to return. Studebaker is behind him and received a three-year extension last season so he's going to be sticking around. There's also LB Justin Houston, who was the Chiefs third round pick. Miller is behind all of these guys so any early impact is unlikely, I think.
My prediction has Vrabel returning and remaining the starter -- at least early in the season -- as Houston works his way in behind him. Studebaker is a role player as he was last year and Miller is at the bottom of the totem pole with little playing time in year one.
Of course, the problem with projecting linebackers is that A.) we haven't seen Miller on the field as one and B.) they're so flexible that they can play a number of positions, especially in a 3-4. So consider this my best guess as to how things will shake out.