My friend who work's for QPR has told me it's going to be a sell out. He struggled to get me ticket's but in the end got me a couple & said there was only a few left & that was two week's ago. So I'd be surprised if there are any left by now.
I saw there were tickets available at londontickets.se, but these guys sell "sports travels" which means the tickets are unbelievably expensive. Priced at around £ 200!