- Jeff Dickerson, ESPN Staff Writer
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BOURBONNAIS, Ill. -- Chicago Bears linebacker Brian Iwuh underwent an MRI exam on his right knee Wednesday morning, but the injury is not believed to be serious, according to Bears head coach Lovie Smith.
"It's a knee [injury], but it's not something we think will keep him out for a long time," Smith said Wednesday evening.
Iwuh was carted off the field Tuesday. He appeared to fall backward over a pile during a run play in a full-team drill and immediately clutched his right knee.
Iwuh's knee felt much better Wednesday, but he also has a high ankle sprain, according to a football source.
Iwuh received treatment from Bears training staff Wednesday morning before undergoing the MRI.
The Bears signed Iwuh after the linebacker turned heads during a minicamp tryout in late May.
"He's athletic, [he has] quickness and is an ace special-teams player," Smith said. "He's been active, knows how to get to the ball and has good instincts for a linebacker. He's not the biggest guy around [6-foot, 239 pounds], but he fits the mold of what we look for in that weakside linebacker position."
Smith said the club was well aware of Iwuh's prowess on special teams, but the club was pleasantly surprised by what he brings to the table as a linebacker.
Iwuh spent the previous four seasons in Jacksonville, earning the reputation as a standout special-teams contributor. He recorded 17 special-teams tackles last year and even started two games at linebacker for the Jaguars, who released Iwuh in April.
Linebacker may be the Bears' deepest position, and even though Iwuh is currently sixth or seventh on the depth chart, the team envisions him as a future four-phase contributor on special teams.
"He picked up the defense very well from what I understand talking to [Bears linebackers coach] Bob Babich," Bears special-teams coach Dave Toub said. "He's flying around on special teams and just plays hard. He's played special teams, he was Jacksonville's core guy last year.
Michael C. Wright contributed to this report. Jeff Dickerson covers the Bears for ESPNChicago.com and ESPN 1000.