Johnny Manziel’s bumpy stint in the Canadian Football League took another sad turn, when it was announced by the Montreal Alouettes that the quarterback has been put in the league’s concussion protocol, via CFL.ca.

“On Tuesday morning, Johnny Manziel mentioned to our medical staff that he felt symptoms that could be associated with the prescribed medication he uses for a previously diagnosed medical condition. He then missed practice in order to have some blood work done. In view of the hit he received on Saturday and the potential mitigating side effects of his prescribed medication, the Alouettes medical staff has placed Manziel under the CFL concussion protocol for further observation and precautionary reasons. Manziel will be closely observed and assessed in the next few days.”

Manziel has struggled mightily in the CFL. He was not able to take the field with his original team, the Hamilton Tiger-Cats, who traded the former Cleveland Browns quarterback to Montreal. And in his CFL debut, Manziel infamously morphed into Nathan Peterman, tossing four first-half interceptions in a crushing 50-11 loss against Hamilton early this month.

Manziel fared better in his last start, but his performance in a 24-17 loss to the Ottawa Redblacks barely did anything to support his campaign for an NFL return, throwing for just 168 yards on 16-of-26 pass completions.

The Alouettes own the worst record in the CFL, with one win against seven losses.