Newcastle United have issued a message for fans planning to watch the club in the EFL Cup.
Rafa Benitez's side take on Preston North End at St James's Park on Tuesday night (7.45pm kick-off) in the fourth round of the competition.
And United are offering cut-price tickets, priced £10 for adults and £3 for concessions, ahead of the game.
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But the price will rise on matchday, and Newcastle are asking supporters planning to attend the match to buy their tickets in advance.
A statement read: "Newcastle United supporters wanting to attend next week's EFL Cup tie with Preston North End at St. James' Park are advised to buy tickets as early as possible after the club reported strong sales for the game.
"The Magpies face the Lilywhites in the last 16 of the competition on Tuesday 25th October (kick-off 7:45pm) and tickets bought before matchday are priced at only £10 for adults and just £3 for concessions.
"Ticket prices will rise on matchday to £20 for adults and £10 for concessions and supporters leaving their purchase until Tuesday could face lengthy queues at the point of purchase and turnstiles.
"While there is still availability in all areas of the ground, supporters requiring their tickets to be posted need to purchase by 5pm on Friday 21st October.
"To secure your tickets now, please visit nufc.co.uk/tickets or call 0844 372 1892 (calls cost 7p per minute plus your network access charge) or visit the St. James' Park Box Office, which will be open throughout the weekend and from 10am on Monday."
Goals from Matt Ritchie and Yoan Gouffran saw United beat Wolverhampton Wanderers 2-0 in the last round in front of a crowd of 34,735 at St James's Park.