Gloucester Rugby's Commercial Manager Mike Turner said:
"Ticket sales are strong and we're confident that the game will be completely sold out. There are a small number of tickets available in all areas but they're going fast.
"The main area of concern for us is The Shed. That's the area of the ground which ordinarily sees the highest number of walk ups on the day of the game. The way ticket sales are going, there won't be any available on the day itself.
"The only way to guarantee being able to watch the game from The Shed is to purchase your ticket as quickly as possible. And, of course, you'll benefit from the £4 Early Bird discount."
Tickets are available by calling 0871 871 8781, online at www.gloucesterrugby.co.uk or in person at the Ticket Office at Kingsholm.