10,500 Back Burton
Nigel Clough's men will be backed by an astonishing 10,500 travelling fans, the biggest away following in recent memory for a match at Old Trafford.
But Sir Alex Ferguson is demanding the Brewers' fairytale is brought to a conclusive end, with the Red Devils the ones booking a fourth-round trip to Wolves.
Ferguson: 'It is great for them. We are great at giving these small clubs a lifeline. I don't know how much they will make out of it, maybe £700,000, the same as Exeter last year.
'But it is beyond a fairytale for us, it is a matter of winning the match and that is what we will be aiming to do, no question about that.'
Win FREE pizza with Vital Football!
Select your team and get 50% off if they score twice.