Arsenal are sweating over the fitness of captain Martin Odegaard ahead of a daunting trip to face Tottenham Hotspur in the North London derby. Odegaard picked up an ankle injury during the International break, at the worst possible time given that midfielder Declan Rice is suspended for the trip to face Spurs. Mikel Arteta refused to rule Odegaard out of action, and there is still a chance he could play some part against Tottenham, with more tests needed to determine the extent of his potential injury. Youngster Ethan Nwaneri could be called upon to replace Odegaard if he does miss the game, b…