Manziel took a hard hit to the shoulder after sprinting for no gain to the left sideline. He was down for a bit before trainers took him to the sideline, then to the locker room. They were checking his left leg. He has been deemed questionable to return with a hamstring injury
Previous starter Brian Hoyer replaced him.
Manziel struggled again during his stint against the Panthers. He completed just 3 of 8 for 32 yards.
Keenum was competing with quarterback Thad Lewis for the starting role after quarterbacks Ryan Mallett and Ryan Fitzpatrick were lost for the season and Tom Savage was ruled out with a knee injury.
Those sources claim that the same uncertainty and erratic play in the pocket, as well as poor footwork and questionable decision-making that he displayed in the game were evident in Manziel leading up to it. He also appeared nervous and unconfident throughout the week.
It has also been reported that Manziel completed about 40 percent of his passes in practice heading into the game against the Bengals. The vain hope was that the spotlight Sunday would bring out the best in him, but he was miserable. He completed just 10 of 18 passes for 80 yards, no touchdowns and two interceptions. A third pick was negated by penalty and a fourth dropped.
La Canfora is further reporting that the Browns are taking a conservative approach to Manziel in Week 16 at Carolina. Mike Pettine has stated that even if he performs well the last two weeks, he will not have locked down a starting job in 2015. And if he continues to struggle, the Browns will most assuredly be looking for another starter for next season. They could even give up their two first round picks and more to snag Oregon standout Marcus Mariota.
Cutler was replaced after three straight losses in which he threw six interceptions and took 10 sacks.
The Texans are 6 1/2-point underdogs.