Danielle Hunter

LSU defensive lineman Danielle Hunter runs the 40-yard dash at the NFL football scouting combine in Indianapolis, Sunday, Feb. 22, 2015. (AP Photo/David J. Phillip)

(David J. Phillip)

Orchard Park, N.Y. — Doug Whaley wanted flexibility.

The Buffalo Bills' general manager wanted to use free agency to fill the team's needs so that he could head into the 2015 NFL Draft with his board wide open. After trading for LeSean McCoy and then signing Charles Clay and wide receiver Percy Harvin, Whaley and company should be able to do just that.

While Buffalo doesn't pick until No. 50, most of its needs have been filled, and Whaley should be able to take the best player available when the Bills are on the clock.

Here is our latest guess on who the Bills could target with each of their six picks in the 2015 NFL Draft.

Round 2, Pick 50: Danielle Hunter, edge rusher, LSU

While most of the Bills' attention this offseason has been dedicated to the offensive side of the ball, there are still some areas Rex Ryan may want to address. Ryan's defensive scheme has been one of the most effective in football over the last decade and a half, and while he says he will fit his scheme to the players, there are some specific pieces he likes to use. One of those is a strong side linebacker that plays a role filled by Calvin Pace and Quinton Coples most recently in New York.

Right now, Manny Lawson and Randell Johnson are the two most logical fits for that role in Buffalo, but a draft pick would make some sense. Mississippi State defensive end Preston Smith would be an ideal fit for Ryan because he could play the five-technique defensive end position but possibly rotate to outside linebacker. Unfortunately, he'll probably be off the board, but LSU's Danielle Hunter isn't a bad fallback plan. At 6-feet-5-inches tall and 252 pounds with 34.5-inch arms, Hunter has the length and athleticism Ryan looks for in an outside linebacker. While he's considered raw, Hunter has the burst off the line of scrimmage and violent hands that will endear him to NFL teams.

Round 3, Pick 81: Ali Marpet, offensive lineman, Hobart College

The only glaring need the Bills weren't able to address in free agency was the interior of the offensive line. While they added Richie Incognito, the team could use another upgrade at the guard position. It remains to be seen whether Buffalo will be willing to invest in another offensive lineman after spending three picks on the position a year ago, but the new coaching staff doesn't have any ties to Cyrus Kouandjio or Cyril Richardson, so it shouldn't be out of the question.

Ali Marpet may come from a small school but he has looked the part during the pre-draft process. Marpet more than held his own at the 2015 Senior Bowl and looked like one of the draft's most athletic offensive linemen at the NFL Scouting Combine. His versatility would make him a valuable addition to an offensive line that could use competition at every spot.

Note: Picks in round 4-7 are subject to change when the NFL announces compensatory selections in March.

Round 4 (picks traded as part of Bryce Brown and Sammy Watkins trades)

Round 5, Pick 129 (traded to the Vikings as part of the Matt Cassel deal)

Round 5, Pick 147: Ramik Wilson, linebacker, Georgia

After parting ways with linebacker Kiko Alonso, the Bills could use some depth in the middle of their defense. Ramik Wilson is an athletic linebacker who has experience playing inside. No player had more tackles in the SEC over the last two seasons than Wilson, but it's his ability to cover a ton of ground in coverage that might be his most appealing trait.

Round 6, Pick 172 (From Minnesota Vikings): Clayton Geathers, safety, UCF

Lost in all of the Bills' free agency madness was the fact that strong safety Da'Norris Searcy won't be back in Buffalo. Searcy was one of Buffalo's most improved defensive players in 2014, and while Duke Williams appears to be a logical successor, it's not a bad idea to find some depth at the position.

Round 6, Pick 178: Nick Boyle, tight end, Delaware

Bills offensive coordinator Greg Roman likes to utilize multiple tight ends in his offense, so it wouldn't be a surprise to see Buffalo go after another tight end in the NFL Draft even after signing Charles Clay to a big deal in free agency. While Clay can play the "move" role on offense, Delaware's Nick Boyle is in the mold of a traditional in-line tight end. His blocking skills would come in handy right away.

Round 7, Pick 209: Connor Halliday, quarterback, Washington State

An ankle injury cut Connor Halliday's season short in 2014, but the productive Washington State quarterback makes for an intriguing option late in the draft. He has plenty of arm strength to make all of the throws and tends to get the ball out of his hands quickly with good anticipation. He's not much of an athlete and could stand to add some weight to his frame, but Halliday has some tools that make him worth a late-round flier.