Every four years, footballers representing countries that qualify for the FIfa World Cup sweat over form, fitness and the risk of getting injured just before the showpiece gets under way. With the World Cup just round the corner and the biggest club prizes up for grabs in the final weeks of the season for many top leagues, the choice between playing it safe and giving it your all can be the difference between catching the flight to the United States, Mexico and Canada or sitting at home regretting what might have been. The list of players who are already out of the June 11-July 19 extravaganza is getting longer by the day and the latest to join that is Arsenal defender Ben White, who is out of contention after sustaining medial ligament damage. The Premier League leaders confirmed the injury on Tuesday and said the England international would be out for the rest of the season.…