JACKSONVILLE, Fla. -- Jacksonville Jaguars coach Doug Marrone says he has a plan regarding how many -- and how much -- starters will play in Thursday night's preseason finale at Atlanta, but he's not going to tell the players until sometime Wednesday.

The goal was to have them treat this week as a regular-season game week and prepare as if they were getting ready for the Sept. 10 opener against Houston, Marrone said.

"I just think it's important for our players' mindset to keep them locked in," Marrone said.

Receiver Dede Westbrook isn't a starter, but he may not play against the Falcons. Westbrook returned to practice Tuesday after spending Monday in Philadelphia to see a specialist regarding a core muscle injury, but Marrone was not happy with the way Westbrook was moving around at practice.

"Not as well as I [would have] liked," Marrone said. "I felt pretty confident the other day that he was going to be able to play. Right now I'm not sure. I'm really not. I'm probably more in a hoping mode that he plays, but I don't know. We'll take that up all the way until game time."

The Jaguars' top three receiver spots are locks with Allen Robinson, Marqise Lee and Allen Hurns. Arrelious Benn is all but a lock to make the team because of his value on special teams, and undrafted rookie Keelan Cole has been so impressive over the last month (with the exception of drops against Tampa Bay and Carolina) that he's expected to make the team as well.

That leaves one spot available, provided the Jaguars opt to keep six receivers. Westbrook, the Jaguars' fourth-round pick, had a good camp after a slow start and was the NFL leader in receiving yardage in the preseason through the first two games. He'd be the logical pick over Shane Wynn because of his ability to return punts and kicks and his speed.

However, if Westbrook's core muscle injury becomes a bigger issue, it wouldn't be a surprise to see the Jaguars place him on IR and give him the entire season to recover.