"What he did was unforgivable. Do you understand what I mean? Because whenever you see a man in a contract dispute, a fellow NFL player, you don't take that opportunity to take your shots at him," Umenyoira said, when asked if there was any added motivation to facing McCoy on Sunday night.
"You wait until you're about to play him. Then you take your shots. We've had our problems. I've moved past it. I just have to focus on winning right now."
In addition to calling Umenyiora "overrated" in June, McCoy said on Twitter that the 30-year-old was the third-best defensive lineman on the Giants.
"He said some things he shouldn’t have said. He made a mistake there," Umenyiora added. "At the end of the day, there’s no extra motivation. I know for a fact that we have to win this game to get to where we need to go.
"He ran his mouth. He crossed the line that shouldn't have been crossed. I think this week, if he was going to say something, should have been the week he said some things like that. I'm not really concerned about that. I'll see him on the football field and we'll go from there."
This will be Umenyiora's first game in 2011 against McCoy, the NFL's second-leading rusher. Umenyiora missed the season's first Giants-Eagles game due to injury. McCoy ran for 128 yards and a touchdown in that Week 3 loss to the Giants.