Less than 80 spaces in the car park for Boxing Day game.
The two teams have not faced each other for five and a half years but, with the Shrimpers now having joined the U's in League One, there are two hotly anticipated games this season.
The first takes place at the Weston Homes Community Stadium and it looks set to be a busy one.
The stadium car park is set to sell out well in advance of the game with less than 80 spaces left and the attendance is in line to be the biggest of the campaign.
To buy your parking, visit www.colutickets.com to buy and print your own, or call 0845 437 9089.
Match tickets for the game will be at the Early Bird best price until the third week of November, so book your tickets for a Boxing Day extravaganza today!