"I predict Jay Cutler will be back in two weeks," Marshall said Thursday on MSNBC's "Andrea Mitchell Reports." "They say four to six [weeks], but we have the right people around Jay right now. So we'll get it done. Two weeks!"
That time frame contradicts what Bears coach Marc Trestman and general manager Phil Emery gave for Cutler's recovery. Both said the quarterback would miss a minimum of four weeks, and after that he'd be week to week.
"I'm going to tell you it's a minimum of four weeks and from there it will be week to week," Emery said on Monday. "We've researched the injury. I'm telling you right from our research, it's a minimum of four weeks and from there it varies. For us it's going to be week to week from there."
But Cutler recently told Trestman he expects to return before the four-week time frame, according to ESPN Insider Ed Werder.
The Bears are 2-6 without Cutler in the lineup since he joined them in 2009.
Having received medical papers from doctors regarding Cutler's injury, Trestman said, "there's been enough references to say this is something that Jay could come back with. Now, we'll go with four weeks like the doctors had said, and then we'll assess it week to week. Jay's injury has been highly documented. I read a paper the doctor gave me that says this is the kind of injury he has and there's a lot of different ways to go about doing it. But the best is just rest and recovery."
So Cutler won't undergo any medical procedures to repair the groin tear.
Cutler tore the groin muscle with 10:09 remaining in the first half of the team's 45-41 loss to the Redskins on Sunday while being slammed to the ground on a sack by Chris Baker.
Cutler appeared to suffer the injury while Baker swung him to the ground, as the quarterback's lower body slammed down on top of the defensive end's knee. Cutler eventually limped off the field under his own power, and the team's medical staff immediately walked him into the locker room.
McCown will start in place of Cutler on Nov. 4 at Green Bay.