You might want to try http://www.arsenal.com..............become a red member and if your lucky you will be able to see the likes of WBA, Hull & 'boro, seriously though there should be more red member tickets available this season.
join one of the irish fan clubs they can get tickets for every game and if your already a red member they'll only charge you 10 to register with them its a bargain. check out the likes of the echo or herald i donno where your from