The Bears on Wednesday promoted center/guard Dieter Eiselen from the practice squad to the active roster and signed receiver Daurice Fountain to the practice squad.
In addition, coach Matt Eberflus told reporters Wednesday that center/guard Lucas Patrick would "likely go on IR" with a toe injury that forced him to exit Monday night's win over the Patriots in the first half. But as of late Wednesday afternoon, no official move had been made.
"We're still determining the extent of that injury," Eberflus said. "We'll figure that out as we go."
After splitting time at right guard with Teven Jenkins in the Bears' first four games this season, Patrick started in place of the injured Cody Whitehair at left guard against the Vikings and Commanders and then opened at center versus the Patriots, supplanting Sam Mustipher.
Mustipher replaced Patrick when he exited against the Patriots and is expected to start Sunday against the Cowboys, Eberflus said.
Patrick signed with the Bears in March after spending his first six NFL seasons with the Packers, appearing in 73 games with 34 starts. He became a regular starter in 2020, opening 15 contests at guard. Patrick split time between center and guard in 2021, appearing in all 17 games with 13 starts.
Eiselen, meanwhile, joined the Bears in 2020 as an undrafted free agent from Yale and has appeared in four games, all as a reserve: one in 2020, two in 2021 and one this season, a Week 2 loss to the Packers in Green Bay.
Fountain has appeared in eight NFL games with the Colts (2018-2020) and Chiefs (2021), all as a reserve. He has two receptions for 23 yards, both in 2020.
Fountain was selected by Indianapolis in the fifth round of the 2018 draft out of Northern Iowa. He played for the Colts when Eberflus was their defensive coordinator before signing with the Chiefs last October when Bears general manager Ryan Poles was Kansas City's executive director of player personnel.
"We know him, understand what kind of guy he is," Eberflus said. "He's an excellent young man and a good team guy."