7,000 Northampton Town fans are expected to make the trip to Stadium MK tonight.
The Cobblers could even outnumber the home side’s supporters at their FA Cup third round replay.
A lucrative home TV tie against Premier League Champions awaits the winners.
Lawson D’Ath is set to miss tonight’s game but the Cobblers hope Alfie Potter will be fit to return.
However, boss Chris Wilder says it’s touch and go.
James Collins and Lee Martin are both cup tied.