Jeffrey agreed to a four-year, $4.52 million deal that included a signing bonus of close to $1.75 million, a source told ESPN NFL Insider John Clayton.
Jeffery becomes the first of the club's 2012 draft class to come to terms on a contract. The rest of the class, including first-round pick Shea McClellin remains unsigned. But the Bears typically move quickly toward signing its rookies. Implementation of the NFL's new rookie wage scale should also speed signings around the league.
The 45th overall pick, Jeffery caught 183 passes for 3,042 yards and 23 touchdowns in 33 starts, before renouncing his senior year of eligibility. Jeffery is one of three players in SEC history to surpass 3,000 yards receiving, and only former Georgia star Terrance Edwards -- who racked up 3,093 yards from 1999 through 2002 -- has gained more receiving yardage than Chicago's second-round pick.
After producing a sophomore season in which he caught 88 passes for 1,517 yards and nine touchdowns, Jeffery watched his numbers dip as South Carolina worked through issues at quarterback.
"Our coaches and all of us as a team, we just went with the best situation to win us the game," Jeffery said. "We thought if teams were gonna double and triple team, and give us the run, we thought we would run the ball more. That would win the most games. We won 11 games. We broke the school record. So that worked out for us."