Season ticket holders can take advantage of half-price seats for the Black Cats' forthcoming game against the famous Dutch outfit.
Roy Keane's side take on the four-times European Cup winners in a showpiece game at the Stadium of Light on Sunday, August 3.
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The match, which kicks off at 3pm, is to celebrate the 35th anniversary of Sunderland's 1973 FA Cup triumph.
Adult tickets are £20. However, season ticket holders (including Black Cats Bar members) can buy a seat for half that price, at just £10.
All junior (U16) and Over-65's tickets are £5, and Black Cats Bar tickets for non-season ticket holders are £25 for this game only.
Chairman Niall Quinn said: "Our season ticket holders are such a vital part of what we are trying to achieve here at this club.
"We're delighted to be able to show them how much we appreciate their support with this special ticket offer."
The special season ticket holder price is available until the day before the game.
All adult tickets sold on the day will cost £20.
Season tickets are still on sale, and with prices from less than £7 per game for under-12s and £22 for adults, supporters could save up to £100 on buying individual match tickets.
Ajax tickets go on sale from 10am on Monday (July 7), and season ticket holders and Black Cat Bar members have until 5.30pm on Wednesday, July 23, to buy their own seat. Voucher 55 is required.
Any unsold season ticket seats will be released for general sale at 10am on Thursday, July 24.
Tickets are available from the ticket hotline 0845 671 1973 between Mon-Fri 9am - 7pm, Sat 9am - 3pm.
Supporters must have their membership number and credit/debit card details to hand.
Postal applications should be sent to – FRIENDLY. PO Box 165, Sunderland, SR5 1WF.
Voucher 55 must be enclosed, along with credit/debit card details or a cheque made payable to Sunderland AFC. A stamped addressed envelope is also required.
In person callers can visit the Stadium of Light ticket office during normal operating hours.
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