Buffalo Bills coach Chan Gailey said on radio station WGR on Monday that running back Fred Jackson is being tested for concussion-like symptoms.
It is not known if Jackson will be ready for Thursday’s game against the Miami Dolphins.
Gailey told the radio station that Jackson has not been ruled out for Thursday but he did not feel well on the flight home from New England on Sunday.
Jackson was injured late during the 37-31 loss to the Patriots while being tackled by linebacker Brandon Spikes.