Seahawks linebacker Leroy Hill's rocky 2010 has hit another bump with news he's likely to be out until at least September with a sprained knee.

Coach Pete Carroll said after practice on Thursday that Hill is going to be out "a few weeks."

Hill sprained the knee on Tuesday. The coach originally thought it was a minor injury.

"It's going to be a bit," Carroll said. "It's going to be a few weeks probably before our guys will want him to go out full speed. We got to make sure and do this right, because there is a little something that happened there."

Hill's troubled offseason had put the outside linebacker's future with the Seahawks in doubt.

Seattle's five-year starter got probation on a plea agreement for a marijuana charge in Georgia. The NFL suspended Hill for the Sept. 12 season opener.

Hill also is facing a trial this month in Issaquah, Wash., on a charge of domestic violence against his girlfriend.

New linebackers coach Ken Norton Jr. has been raving about the play of outside linebacker David Hawthorne. The third-year, non-drafted free agent was already getting plenty of time this summer, and was often ahead of Hill in scrimmages before Hill got hurt.