Five down, one to go.

The Bears signed second-round draft pick Jon Bostic to a four-year contract Thursday, making him the fifth of six picks to sign with the team before rookie minicamp starts Friday. Bostic, who played inside linebacker at Florida, was the No. 50 overall selection.

Before signing Bostic, the Bears also agreed to four-year deals with fourth-round pick Khaseem Greene, fifth-round pick Jordan Mills, sixth-round pick Cornelius Washington and seventh-round pick Marquess Wilson.

The only draft pick yet to sign with the Bears is first-rounder Kyle Long, an offensive lineman who played for one season at Oregon. Long, who was the Bears' top selection at No. 20 overall, is expected to join his fellow rookies this weekend at Halas Hall.

-Tom Musick

Connecticut's Taylor Mack gets knocked out of bounds by Rutgers' Kasheem Greene in 2010 in Piscataway, N.J. The Bears took Greene on Saturday in the fourth round of the NFL draft. (AP Photo/Tim Larsen) (Tim Larsen)

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The Bears selected Rutgers linebacker Khaseem Greene in the fourth round of the NFL draft on Saturday.

In Round 5, the Bears turned to the other side of the ball by selecting Louisiana Tech offensive lineman Jordan Mills.

Greene, 24, joins second-round draft pick Jon Bostic as rookie linebackers on the Bears' 2013 roster. The Bears selected Bostic at No. 50 overall on Friday before picking Greene with the No. 117 overall pick.

At Rutgers, Greene (6-0, 241) established himself as a reliable tackler and a versatile defender. He started 12 games as a free safety in 2010 before moving to weak-side linebacker, where he started 26 games in the past two seasons.

Greene forced 15 fumbles during his college career, which is an NCAA record. He tallied 387 tackles, 11.5 sacks, 32.5 tackles for loss and seven interceptions at Rutgers.

For the Bears, Bostic and Greene will join veteran linebackers Lance Briggs, D.J. Williams, James Anderson and Blake Costanzo. Other linebackers who will compete for a roster spot include J.T. Thomas, Dom DeCicco and Patrick Trahan.

Meanwhile, Mills likely projects as a long-term right tackle in the NFL. He joins first-round pick Kyle Long as rookies who will be asked to help bolster an offensive line that allowed 44 sacks in 2012.

– Tom Musick

The Bears selected Florida linebacker Jonathan Bostic in the second round of the NFL draft Friday. (AP file photo)

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The Bears selected a middle linebacker in the second round Friday – and no, it was not Notre Dame's Manti Te'o.

Instead, the Bears selected Jonathan Bostic from the Florida Gators with the No. 50 overall pick of the second round. Bostic might not be as much of a household name as Te'o, but he was a productive four-year player for one of the top teams in the SEC.

During his college career, Bostic (6-0, 245) started 32 of 51 games at middle linebacker and finished with 237 tackles, eight sacks, 19.5 tackles for loss, five interceptions and a touchdown. The Wellington, Fla., native finished his college career with six tackles against Louisville in the 2013 Sugar Bowl.

The Bears badly needed youth and speed at linebacker, and Bostic fills both needs. He ran a 4.61-second 40-yard dash as part of his agility tests while bench-pressing 225 pounds 22 times. He will turn 22 years old next month.

A run on linebackers preceded the Bears' selection of Bostic. The San Diego Chargers traded up to select Te'o at No. 38, while the Arizona Cardinals selected LSU's Kevin Minter at No. 45 and the Buffalo Bills selected Oregon's Kiko Alonso at No. 46.

-Tom Musick

Kyle Long grew up in Virginia and last played in college at Oregon, but he said Friday that he was well aware of Chicago's reputation as a football-loving city.

“I just know that Chicago is one of the most historic football towns in the country," Long said Friday at Halas Hall. "There are Chicago Bears fans everywhere in the world.

"The 'C' on the helmet is synonymous with success and tremendous football. That’s what I’m most excited about, coming to Chicago and being part of the Bears organization.”

Long, who will wear No. 75 for the Bears, spoke in front of several dozen media members as well as his parents, Howie and Diane. Howie Long played for 13 seasons in the NFL and was inducted into the Pro Football Hall of Fame in 2000.

"I've been saying this to his mom since he was 4 years old: He’s kind of a freak of nature, physically," Howie Long said with a smile after his son's news conference. "God just puts the hand on some people, puts the hand on their shoulder and says, ‘You’re gifted. Now what are you going to do with it?’ And that’s Kyle."

Long is expected to play guard for the Bears during his rookie season. He said he already had received text messages from several of his new teammates, including Jay Cutler and Brandon Marshall.

The draft will continue Friday night with Rounds 2 and 3.

-Tom Musick