"I don't think there's an exact need," Lewis said. "I feel really good about the guy we were able to draft. If he ends up being the starter as a rookie, I think he can do that."
While the quarterback quandary might be the first thing on fans' minds, Lewis is more concerned with re-signing free-agent running back Cedric Benson.
The Bengals are scheduled to start their offseason workout program Tuesday, depending on the 8th Circuit Court of Appeals' ruling on a permanent stay of an injunction granted to the players in Minnesota to block the lockout.
If the stay is granted, Lewis said the coaches will begin game-planning without players.
"It's critical for us with a No. 1 pick at wide receiver (A.J. Green) and No. 2 pick at quarterback to use those OTA days when they're all here," Lewis said. "It will be critical for us this year."
The Associated Press contributed to this report.