It means Stags could have more than 5,000 extra fans backing the boys at the national stadium.
Tickets went on sale for the glamour tie today – and here’s how you can get your hands on tickets.
Stags finished seventh in the table and made the final with a two leg victory over Northampton in the semi-finals
Port Vale came fifth and got the better of Swindon Town on penalties.
Vale came out on top in the head to head after beating Stags at home and drawing at the One Call Stadium.