Arsenal manager Mikel Arteta says fatigue is not an excuse for his players as the Premier League campaign enters its final stages. The Gunnars face Leicester on Sunday after a long trip to Greece to take on Benfica in midweek. "Fatigue is a lot of times, mental. Because when things go well and you score a goal, I'm sure you still have the energy to sprint and celebrate that goal. But when you have to track somebody back, then you are tired. I don't really agree with that. When you are on that pitch until you are absolutely done, you have to give your best," said Arteta.