Collins suffered a bruised lower back during the 24-10 loss at Buffalo on Sunday and was removed from the game in the third quarter. There was concern afterward that Collins might have sustained damage to his kidneys.
Collins underwent a magnetic resonance imaging test after the team returned to Green Bay, and results were negative.
"Everything looks to be fine, so I think he'll be ready to go this week," McCarthy said.
There's less certainty about rookie receiver Greg Jennings' availability for the next game.
Jennings played Sunday on a badly sprained right ankle and aggravated the injury at the end of a 25-yard catch-and-run in the second quarter. He returned to the game a short time later but wasn't effective on the ankle in the second half.
McCarthy said Jennings was sore Monday.
"He'll probably miss some practice time again, and we'll know more by the end of the week. We're hopeful he'll go," said McCarthy, adding that Jennings will be listed as questionable on the first injury report Wednesday.
Others are still sore
Ahman Green will remain on a scaled-back practice schedule this week. After he missed two games earlier in the season because of sore hamstrings, Green has been held out of the Wednesday practice. Keeping Green fresh has paid off with three straight 100-yard rushing games.
-- CB Charles Woodson made it through the entire game Sunday, although he's coping with a bruised left knee. The lingering injury will limit Woodson's activity in practice this week. He was kept off punt returns in the last game.
-- RB Vernand Morency will be listed as doubtful for Sunday's game at Minnesota because of a lower back injury. Morency has been sidelined since suffering the injury Oct. 29.
-- FB Brandon Miree also will be doubtful for the upcoming game. Miree sustained a hyperextended left elbow in the Oct. 29 game.
-- DT Johnny Jolly was deactivated Sunday after he was beset with an ankle injury the previous week. The rookie backup has been on the inactive list six of the first eight games.
Noon start against Patriots
The team learned Monday that its Nov. 19 home game against New England will remain a noon (CST) start. The game was under consideration to be moved to Sunday night as part of the league's flex scheduling.