There will be no intrigue this week regarding Steven Jackson’s availability for Sunday’s game against the Bears. Jackson already has been ruled out, meaning that the strained thigh muscle that originally was thought to be a one- or two-day injury is extending toward six weeks.

Jackson was injured in the fourth quarter Oct. 19 against the Cowboys. He reaggravated the injury two weeks later when he tried to come back vs. the Cardinals, and has been sidelined since then.

Jackson saw a specialist late last week. “They feel that he should be out this week, rest him,” coach Jim Haslett said. “We’ll see what happens next week.” The injury was rediagnosed as a strain. “It’s just going to take some time to heal,” Haslett said.

Elsewhere on the injury front:

*LT Orlando Pace will miss two to four weeks a knee ligament injury.

*CB Ron Bartell is day-to-day with a soft-tissue injury to his knee.

*RB Kenneth Darby has a slight strain of his ribs.

*LB Chris Draft (foot) will be out two to three more weeks.

*DT La’Roi Glover has torn cartilage in his knee, originally suffered a couple of weeks ago, but should be able to play.

*CB Tye Hill (knee) will resume jogging this week.

*G Richie Incognito (shoulder) was scheduled for an MRI exam later Monday.

*DE Eric Moore (neck) will return to practice this week.

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Notes & quotes:

*After a discussion with his coaching staff Monday, Haslett has decided to stick with Marc Bulger at QB.

*If Incognito is out Sunday, rookie John Greco will start at RG . . . if Greco’s left knee is OK. His kneecap popped out of place briefly in practice Friday.

*Adam Goldberg will step in for Pace at LT.

All for now . . .