When the big boys do come into the FA Cup their draw is random just like everyone else's so Man. U could draw Royal Lemington Spa or they could draw Chelsea. There are over 700 teams in the FA Cup, which is quite a few more than the 2*however many countries in BB.
I agree with Kozlodoev. If someone does the double, invite the cup runner-up.
Once I scored a basket that still makes me laugh.