Louis Riddick and Adam Schefter aren't sure Johnny Manziel will ever get another shot to play professional football. (0:39)

Riddick: Manziel release from CFL 'may be the end of the road' (0:39)

The Alliance of American Football is in a holding pattern regarding quarterback Johnny Manziel, whose contract was terminated this week by the CFL.

"We don't know," Alliance co-founder Charlie Ebersol said Friday. "We're trying to get to the bottom of what happened in Canada. We want to be a league of opportunity to the best available players, assuming they are available contractually, with a clean bill of health and a clean criminal record. We want them if they can play at our level. We have to have guys who play at a level that every single guy has a shot to get back to the NFL.

"We look at everybody. If he is clean and clear, we will certainly talk to him about coming out for a workout."

The AAF is entering its fourth weekend. The San Antonio Commanders would have the first shot at Manziel because he went to Texas A&M; he would go through the league's waiver process should the Commanders pass on him.

Manziel's contract with the Montreal Alouettes was terminated Wednesday. The league also told the eight other CFL clubs it wouldn't register a contract for Manziel if anyone tried to sign the 2012 Heisman Trophy winner.

The league said Manziel, a 2013 first-round draft pick by Cleveland who only lasted two seasons in the NFL, breached an agreement that made him eligible for the CFL.

Manziel was 2-6 as a starter last season, completing 106 of 165 passes (64.2 percent) for 1,290 yards with 5 TDs and 7 interceptions. He also ran for 215 yards on 29 carries as Montreal (5-13) missed the CFL playoffs.