SANTA CLARA The 49ers reached the 75-man roster limit Tuesday without having to release any healthy players.
Eight players including wide receiver Michael Crabtree (Achilles') were transferred to various injury lists, and two other injured players, defensive end Lawrence Okoye and nose tackle Lamar Divens, were waived.
Okoye, the former discus thrower from Great Britain, injured his knee on one of the 49ers' final defensive plays Sunday against Minnesota. If Okoye and Divens clear waivers as expected, the 49ers either can negotiate an injury settlement with them or place them on injured reserve.
Coach Jim Harbaugh said Okoye's knee sprain is not a long-term injury. The 49ers could reach an injury settlement with him and then sign him to their practice squad.
"We'll have his rights when he's healthy and we can sign him back," Harbaugh said.
The 49ers placed four rookies defensive ends Tank Carradine (knee) and Quinton Dial (toe), running back Marcus Lattimore (knee) and offensive tackle Luke Marquardt (foot) on the reserve/non-football injury list.
Cornerback Eric Wright, who reported to the team Tuesday, also is on that list. The 49ers signed Wright earlier this month, but he had been dealing with a personal matter and hadn't joined the team.
Meanwhile, Crabtree and wide receiver Mario Manningham (knee) will be placed on the reserve/physically unable to perform list.
Players on those lists do not count against the roster total but will not be eligible to practice until after Week 6, when they can be added to the 53-man squad.
The team also placed cornerback Chris Culliver (knee) on injured reserve, making him ineligible to return this season.
The 49ers must trim the roster to 53 players Saturday.
Willis looking blue Patrick Willis went through warmups with the rest of the linebackers Tuesday, but he was dressed in a blue, non-contact jersey. When that session ended, he walked to a side field to work with trainers.
Though brief, it was Willis' first involvement in practice since he broke his right hand during a pass protection drill July 31. Earlier Tuesday, defensive coordinator Vic Fangio said he expected Willis to be in the lineup for the Sept. 8 opener against Green Bay.
"Now he may have to play with some contraption on his hand for a little bit, but my understanding is he'll be ready," Fangio said.
Also wearing blue, non-contact jerseys were linebacker Cam Johnson (shoulder), cornerback Nnamdi Asomugha and running back Jewel Hampton. Linebacker Nate Stupar has a brace on his left arm but no longer is in a non-contact jersey.
Et cetera Fangio said Asomugha had the edge over Tramaine Brock in the competition to be the No. 3 cornerback. He said Brock was slowed by an injury in recent weeks, which allowed Asomugha to take advantage.
Now Asomugha is dealing with his own minor injury.
"It's a little bit unsettled because of the injury situation more than anything," Fangio said.
Fangio said he expected that linebacker Ahmad Brooks, involved in a fight with Divens in June, will be available for Week 1 and that he thought the NFL had announced Brooks would not be suspended. Asked in an email whether that announcement had been made, an NFL spokesman wrote, "Nothing to report." Brooks wasn't charged in the June incident.
The 49ers re-signed linebacker Joe Holland, who was cut Monday, for Thursday's preseason finale in San Diego.
Read Matthew Barrows' blogs and archives at www.sacbee.com/sf49ers and listen for his reports Tuesdays on ESPN Radio 1320.