I don't think getting a ticket will be a problem if the Madrid ticket thread is anything to go by.
They are being offered left right and center with less than 24hrs till kick off, shame a flight now costs £350 and would mean a 6hr wait in Zurich after boarding in Manchester at 7.40am to get to Madrid at tea time.
2,3 and 4 tickets are being touted by first time posters. Make of it what you will but I hope they get stuck with them.