Bolton's Kevin Davies will serve a three-match ban after the Football Association rejected an appeal against the red card he picked up at Charlton.
Davies was injured by Hreidarsson
Davies was dismissed after elbowing Addicks midfielder Amady Faye during last Saturday's Premiership match.
The earliest Davies could return to action would be when Bolton travel to Portsmouth on 25 September.
However, the 29-year-old is likely to sit out until at least October because of a cheekbone injury.
Davies picked up the knock when he was elbowed in the face by Charlton's Hermann Hreidarsson during the match against Charlton.