I went to Brussels for a weekend a couple of years ago with some friends and had an absolute blast. Its a beautiful city with some great pubs and restaurants. It's absolutely essential you go to Delirium Cafe which is near the Grand Place. They have a ridiculous number of different beers on sale in there and its always busy with people from all over the world. Make sure you try Bush, a 12% abv beer, its awesome. Anyway to answer your most important question, there's a pub called Celtica thats also very central and they definitely had English footy on when I was there. Have a good one, here's links to those bar's websites.
http://www.deliriumcafe.be/
http://www.celticpubs.com/celtweb/celticabxl.html