The offer, according to the Wrexham official website, is going to be for tickets brought in advance ahead of the game on Saturday.
Wrexham are currently supplying the Stags Ticket Office with these, and it may be worh phoning the office to ensure these have been received:
Phone: Mansfield 01623 482495
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Mansfield Town Official Website
WREXHAM TICKET PRICES
Mansfield Town supporters can take advantage of the £5 ticket offer for the match at Racecourse Stadium, Wrexham on Saturday 31st March 2007 by pre-purchasing tickets from the Field Mill Ticket Office.
This £5 deal is for all adults and concession tickets that are pre-purchashed.
Ticket prices on the day will be £16 for adults, £10 concessions and £5 juniors (under 16).