Time running short for NaVorro Bowman?

While San Francisco inside linebacker NaVorro Bowman enters the third week of his 21-day evaluation, he is not expected to practice any time soon.

“I think we’re looking at another week of rehab,” 49ers coach Jim Harbaugh said Monday in his weekly media conference.

Bowman is recuperating from tearing the ACL and MCL in his left knee in the NFC title game on Jan. 19. The Niners have until next Tuesday to decide whether to activate the All-Pro to the 53-man roster or place him on season-ending reserve.

Harbaugh also said nose tackle Glenn Dorsey, who was activated to the 53-man rister on Nov. 17 but has yet to be activated for a game after tearing his left biceps in training camp, would not practice for “another week” while receiver Michael Crabtree was “working through some things.”

Crabtree injured a knee and his ribs on the second play of Thursday night’s 19-3 loss to the Seattle Seahawks, though he returned to the game and caught three passes for 10 yards.