Cincinnati, OH (SportsNetwork.com) - The Cincinnati Bengals have listed A.J. Green as doubtful for Sunday's AFC Wild Card game against Indianapolis as the star wide receiver continues to remain in the NFL's concussion protocol.

Green sat out Friday's practice while still awaiting medical clearance for his head injury, which occurred during the fourth quarter of last Sunday's 27-17 loss at Pittsburgh.

The Bengals' official site did report that Green does have a meeting with a neurologist scheduled for Saturday, with the hope the four-time Pro Bowl selection will receive the go-ahead to participate in Sunday's matchup at Lucas Oil Stadium.

Green led Cincinnati with 69 receptions, 1,041 receiving yards and six touchdown catches during the regular season. He also missed the Bengals' meeting with the Colts back in Week 7 due to a toe injury, with Cincinnati being dealt a 27-0 defeat without its top wideout available.

Tight end Jermaine Gresham is considered questionable for Sunday's game with a back issue, but did participate in Friday's practice after missing the previous two days' sessions.