HERTFORDSHIRE, England -- Buffalo Bills wide receiver Percy Harvin did not travel to London this week because of a personal issue and isn't expected to be available Sunday against the Jacksonville Jaguars.

"He's pretty much excused for personal reasons, so I'll just leave it at that," coach Rex Ryan said Wednesday, declining to elaborate on how much time Harvin might miss.

Harvin, who has a lingering hip injury, did not play in Sunday's 34-21 loss to the Cincinnati Bengals. It was the first game that he has missed this season.

A source told ESPN on Monday that Harvin wasn't expected to play against the Jaguars because of the injury.

The Bills have held Harvin out of Wednesday practices since the start of the regular season after he missed the entire preseason because of hip soreness; however, he was listed as probable on their injury report each week until being designated as questionable last week.

Harvin was one of four players who did not travel to London with the Bills, joining running back Karlos Williams (concussion), starting right tackle Seantrel Henderson (concussion) and defensive tackle Kyle Williams (left knee). Ryan did not rule out any of the players for Sunday's game but said he did not anticipate them being available this week.

Quarterback Tyrod Taylor (knee) and wide receiver Sammy Watkins (ankle) traveled to London but Ryan did not provide an update on their status for Sunday's game.