I was going to recommend a place called tipgames bar just off wenceles square as it was a football bar adorned with a variety of shirts and scarves across the walls and ceiling as well as a section b graffiti in the bogs but looking on Google it appears to be closed now. Your best bet would probably be one of the paddy themed bars. There's a number not far from wenceles square but I never went to one when I was there about 14yrs ago so don't know what they're like atmosphere or price wise.