Clark had to leave Thursday's game against the San Francisco 49ers after re-aggravating a strained disc in his neck. Payne is still recovering from a back condition that forced the safety to miss the Niners game, while Kreutz was likely just given a day off Monday.
Bowman, who also made an early exit in San Francisco, was bothered by a lingering stomach issue that required extra medical attention Thursday night. However, Bowman now appears to be okay, and we should know more about Afalava's status when the team gets back to work on Wednesday.
Garrett Wolfe also missed practice.
Left tackle Orlando Pace was back on the practice field -- he was also forced to leave the game early last week.
The Bears need all hands on deck when they face Donovan McNabb and the Eagles this weekend, since Philadelphia is expected to be in a pass-first mode with Brian Westbrook possibly sidelined with another concussion.