Man City keeper Hart admits Rio row can be Euros 'distraction'
Roy Hodgson's decision not to select Ferdinand has caused a storm and there have been reports of divisions within the squad over the matter.
Goalkeeper Hart accepted he and his team-mates must not let it become a distraction in Poland and Ukraine.
"It can't be," he said. "We've just got to concentrate on who's in the squad and how we're going to win."