Philadelphia Eagles quarterback Michael Vick leaves the field after suffering a concussion during the second quarter of an NFL football game against the Dallas Cowboys, Sunday, Nov. 11, 2012, in Philadelphia. (AP Photo/Philadelphia Daily News, Yong Kim) THE EVENING BULLETIN OUT, TV OUT; MAGS OUT; NO SALES

Philadelphia Eagles quarterback Michael Vick leaves the field after suffering a concussion during the second quarter of an NFL football game against the Dallas Cowboys, Sunday, Nov. 11, 2012, in Philadelphia. (AP Photo/Philadelphia Daily News, Yong Kim) THE EVENING BULLETIN OUT, TV OUT; MAGS OUT; NO SALES