The Texans' fluid quarterback situation took another turn Monday when backup Taylor Heinicke suffered a concussion.

With Heinicke still under the NFL concussion protocol and Tom Savage out for the season with a concussion of his own, the Texans have only one healthy quarterback in starter T.J. Yates and may need to sign a new backup. Among the options is free agent Josh Johnson, who was previously with the Texans this year.

"We're talking about that right now," Texans coach Bill O'Brien said. "Obviously Taylor's in the protocol, but we haven't made a decision on that yet."

It was a rough game for Yates on Monday during a 34-6 loss to the Pittsburgh Steelers. He was sacked six times, leaving the game to be checked out and was ultimately cleared under the concussion protocol. Yates completed just 7 of 16 passes for 83 yards, one touchdown and one interception for a 54.9 passer rating.