The Patriots listed four players as questionable on Friday ahead of their Week 5 Sunday Night Football matchup with the Buffalo Bills at Highmark Stadium.

All four are defensive players, three of whom missed at least one day of practice this week.

Linebackers K’Lavon Chaisson (knee) and Jahlani Tavai (calf), as well as cornerback Carlton Davis III (illness) and defensive tackle Milton Williams (ankle) have a 50/50 chance of suiting up Sunday.

Williams is the most notable player on Friday’s report. He was a limited participant during Wednesday’s and Friday’s practices, but did not participate on Thursday.

New England head coach Mike Vrabel didn’t have much to say about Williams’s ailment when asked by a reporter about it.

“It’s an ankle, as it’s listed on the injury report, and it’

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