Schaffer said that he spoke to Howie Roseman after he was informed of the move, and he told the Eagles general manager then that he planned to file a grievance because Patterson likely contracted the illness at work.
"I think it's pretty clear that he got it at practice or at the NovaCare complex," Schaffer said. "That's where he spends all his time."
The Eagles did not immediately respond to a request for comment.
So Patterson's season is over since players placed on the non-football illness list must sit out at least eight games. This is Patterson's second stint on the list this year. The Eagles placed him on it in late August when it was clear he would not be ready by the start of the season while recovering from offseason brain surgery. Patterson is the Eagles' longest-tenured player, and the eight-year veteran is not expected to be invited back next season.
"I told Howie this morning that if he could prove to me that Mike didn't get pneumonia at practice I wouldn't file a grievance," Schaffer said. "He said he couldn't."
Schaffer has had a long-standing relationship with the Eagles. He used to have lunch with Roseman and former Eagles president Joe Banner every year at the Indianapolis scouting combine.
"I love Howie, but this is wrong and petty," Schaffer said. "To do this to one of your leaders and to a guy that fought back from brain surgery is just wrong."
Igwenagu at tight end
The Eagles needed a tight end this week after Brent Celek was ruled out with a concussion. So Emil Igwenagu, a rookie from Massachusetts was promoted from the practice squad.
Igwenagu was with the team during training camp and the preseason and has been on the practice squad all season.
Igwenagu swung between fullback and tight end during the preseason and caught six passes for 36 yards.
To fill Igwenagu's spot on the practice squad, the Eagles signed defensive tackle Ronnie Cameron. Cameron spent time with the Cleveland Browns and Chicago Bears during the preseason.
Vick, McCoy out
Quarterback Michael Vick and running LeSean McCoy were officially declared out for Thursday night. Neither was expected to play. Vick will miss his fifth consecutive game, while McCoy will sit for his fourth consecutive game.
Safety Kurt Coleman was also declared out with a chest injury. Running back Chris Polk is questionable for the second consecutive week with a toe injury.
Guard Evan Mathis and wide receiver Jeremy Maclin are both probable and expected to play.
Contact Jeff McLane at firstname.lastname@example.org. Follow @Jeff_McLane on Twitter.