Tackle Shawn Andrews, who has replaced the injured David Diehl at left tackle, missed practice on Wednesday with an undisclosed back problem.
Second-year pro Will Beatty, who just returned to the lineup on Sunday after being sidelined since the season opener with a broken foot, would be the logical choice to replace Andrews.
Doctors had no good news for Coughlin on the status of Diehl (hamstring-hip) and center Shaun O'Hara (foot), who both did not practice on Wednesday.
Steve Smith, who set a single-season team record for receptions last season with 107, will not play on Sunday. He partially tore a pectoral muscle in practice on Thursday.
"It's probably going to be a couple of weeks," said Smith, who hopes to return against Washington on Dec. 5. "It was a crazy freakish accident."
Smith said he was hurt making a catch in an awkward position.
"I just fell on it, like a normal fall," said Smith, who had 47 catches for 517 yards and three touchdowns this season.
Copyright 2010 by The Associated Press