Ramsey, who has asked the Jaguars to trade him, is dealing with tightness and soreness in his back, Marrone told reporters.
The two-time Pro Bowl cornerback did not participate in the team’s workouts Monday because he was ill, though he did make an appearance at the facility.
Marrone does not know when Ramsey first started experiencing the back issues. Ramsey played in Jacksonville’s game last Thursday against Tennessee and did not report the back injury to the team after the game.
Ramsey has not rescinded his trade request, which he made after the Jaguars’ 13-12 loss at Houston on Sept. 15. Jaguars owner Shad Khan, however, does not want to trade Ramsey, according to league sources.
League sources told ESPN’s Adam Schefter on Wednesday that, at this time, it is considered unlikely that Ramsey will play Sunday against the Denver Broncos as he and the team are engaged in the impasse.