Jaguars lineback Paul Posluszny suffered a high ankle sprain during Sunday's game against the Colts and will be evaluated further this week.
Posluszny was forced to exit Sunday's game due to his ankle injury, which typically takes a few weeks to recover from. While the Jaguars have yet to release a timetable for Posluszny's return, they would certainly have a void to fill at middle linebacker, as Posluszny's 39 tackles and one interception lead Jacksonville at the moment.
The Jaguars are expected to sign former Colts free safety and special teams ace Sergio Brown on Tuesday, Mike Garafolo of FOX Sports reports. Brown, 26, registered 33 tackles and one sack last season for the Colts.
Robinson will remain out for a second straight week as he continues to recover from a sprained knee. He's without a firm timetable, but the fact that he was not able to practice in any fashion this week may be an indication that he's not overly close.
Bears tight end Martellus Bennett hauled in 11 catches off of 13 targets for 83 yards and a touchdown in a win Sunday over Oakland.
Bennett has been the largest beneficiary of Alshon Jeffery's absence, leading the team in targets, receiving yards and touchdowns through four weeks. With only so many passes to go around, Bennett may see a slight dip in opportunities once Jeffery returns, but keep in mind that offensive coordinator Adam Gase worked wonders with similarly athletic tight end Julius Thomas in Denver.
Wide receiver Justin Blackmon , who hasn't practiced or played since 2013 after being suspended for the third time for violating the NFL's substance abuse policy, is unlikely to return to the Jaguars according to GM David Caldwell, per ESPN.com.