ORCHARD PARK, N.Y. -- The Buffalo Bills were without Pro Bowl defensive tackles Marcell Dareus and Kyle Williams for Tuesday's practice, although Dareus is expected to return Thursday.

"He'll be back," coach Rex Ryan said of Dareus. "He had a personal thing he had to deal with."

Williams, who has not played since injuring his knee against the Cincinnati Bengals in Week 6, will not play against the New England Patriots next Monday night.

"I don't think there's any chance of it," Ryan said.

The Bills were also without wide receiver Denarius Moore for Tuesday's practice after he missed a flight. Ryan said Moore will be fined.