Due to the intense rivalry and don't forget, Doncaster Rovers (yes, them!) await the winners of this tie, cannot see anything but a sellout at Blandford Park.
You might get lucky with ticket touts outside the ground, sorry stadium. Failing that, try Ticketmaster or Viagogo...though leaving it a tad late!
Good luck!
Actually I am in same boat missed 4pm dead line. Can I buy on the day?