The Jets got alarming news from the test results on the right shoulder of starting free safety Jon McGraw, who’s expected to be out of action for two to four weeks.

McGraw, who has 21 tackles in his five starts this season, will be replaced by either rookie, Derek Pagel, a fifth-round pick in April’s draft, or Tyrone Carter, an offseason free-agent acquisition.

The Jets also are expected to be without Jamie Henderson, the team’s third cornerback who suffered a sprained right knee in Sunday’s win over Buffalo.

Rookie linebacker Victor Hobson, who’s now sharing playing time with Mo Lewis, has sore ribs and is a question mark for the game. Leonard Myers, a reserve cornerback also is nursing a sore right shoulder.