ATHENS, Ga. (AP) — Georgia coach Mark Richt expects star tailback Todd Gurley's indefinite suspension to stay in place this week.

No. 10 Georgia plays a Southeastern Conference game at Arkansas on Saturday. The school is investigating allegations of rules violations by Gurley, whose suspension began for last week's 34-0 win at Missouri.

Richt said on his Twitter account early Thursday that he will "try to clear up Todd's status" and "will let you know if his status changes." He added that he's "not anticipating it to change this week."

The school has not released details of the investigation. Richt has said it involves Gurley allegedly receiving improper benefits with autographs and memorabilia.

Gurley is considered a leading Heisman Trophy candidate and continues to practice with the team.

Georgia's depth at tailback has taken a severe hit. Keith Marshall, who has a sprained ankle and sprained knee, is "doubtful for this game, at best," the coach said Wednesday. Richt added that he hopes another tailback, freshman Sony Michel, can return from a shoulder injury for the Nov. 1 game against Florida.

Freshman Nick Chubb played against Missouri and ran for 143 yards with a touchdown on 38 carries, the most for any Georgia player since 2001.

Georgia moved J.J. Green from strong safety to tailback this week, and Richt thinks he "could help us in a pinch." Green was the team's second-leading rusher in 2013. Richt said Green's return to offense is a short-term move.

Even before providing the update Thursday, it was clear Richt wasn't counting on having Gurley this week.

"You prepare like he won't be there, and if he is it's a bonus," Richt said Wednesday.

Quarterback Hutson Mason and other players said they were motivated against Missouri to prove Georgia is not a one-man team.

"We had a chip on our shoulder as far as we don't have Todd and everyone thinks that the world is falling apart," Mason said.

Georgia (5-1, 3-1 SEC) played perhaps its most complete game of the season against Missouri but ultimately could see its SEC championship hopes damaged if Gurley does not return.

Despite missing the Missouri game, Gurley leads the SEC with 773 yards rushing. He had 1,385 yards rushing and 17 touchdowns in 2013.

Gurley opened this season with 198 yards rushing and three touchdowns in a win over Clemson. He added 208 yards rushing with two touchdowns against Tennessee and 163 yards with two touchdowns in his last game against Vanderbilt.