Hello again,
I was thinking about the game and I feel this is the perfect chance for Theo Walcott to score. He already should be fully fit, he will most probably start and surely there will be a lot space to exploit. Especially at the end of the game, when Napoli will most likely have to push. This is the reason I am adding another bet for the game:

Event: Napoli - Arsenal
Pick: Theo Walcott to score anytime
Odds: 4.33 @ William Hill
Stake:2/10

Good luck everyone