A quick guide to Northampton Saints European opponents and how the new competition works.
Northampton Saints are preparing for an open top bus ride through the centre of town to celebrate their premiership final victory.
The relentless kicking accuracy of Stephen Myler helps seal the win for Saints
#ERCCPoolDraw finished - Saints playing Racing Metro, Ospreys and Treviso. Some cracking trips there!
Northampton Saints have been drawn in Pool 5 for the European Rugby Champions Cup.
They'll play Racing Metro, Ospreys and Treviso. Last season's beaten finalists Saracens will tae on Munster, Sale Sharks and Clermont Auvergne.
Local rivals Leicester Tigers have been drawn with Scarlets, Ulster and reigning champions Toulon.
Thousands of people packed into Northampton town centre to welcome home the Saints rugby team after their victory in the Aviva Premiership final.
They beat Saracens at Twickenham - clinching victory in the final seconds of extra time.
The team took the trophy on an open top bus tour in front of thousands of fans.
Northampton Saints players have started their victory celebrations in the town.
Northampton Saints fans have packed Market Square ready to welcome home their heroes.
The squad is due to arrive in the square soon on an open-topped bus.
The victorious Northampton Saints will be joining their supporters in the Market Square as they celebrate their triumph over Saracens at Twickenham.
The new Aviva Premiership champions will bring both the Premiership trophy and Amlin Challenge Cup into the town centre on Sunday 1st June.
At 12.30pm the Saints players and coaching staff will leave Franklin's Gardens on an open top bus and make their way to the Market Square. The Saints will arrive on the Market Square at around 1pm, the players will parade the both trophies before they make their way to the Guildhall.
Fans wanting to get the best view will want to gather on the Market Square before 1pm. When the open top bus arrives there will be opportunities to see the trophies and take photos.
At about 2pm the players will make their way to the steps of the Guildhall to be formally congratulate.
– Councillor David Mackintosh, Leader of Northampton Borough Council
This is a fantastic day for Northampton. Once again the Saints have done us proud bringing not one but two trophies back home and being crowned champions of England. I am looking forward to meeting with each player at the Guildhall to let them know, on behalf of the town, how proud we are of their achievements and what they mean to our town. I would like to invite everyone to come into the town centre on Sunday to join us in recognising and celebrating the team's success. So bring your Saints colours and help us give a great welcome to the players who proudly represent Northampton every week.
Northampton may have lifted the Amlin Challenge Cup only a week ago but Stephen Myler insists the success of their season will be decided by Saturday alone.
Saints are hoping to secure their first Aviva Premiership title when they face strong favourites Saracens in front of a sell-out crowd at Twickenham.
Last year was their only previous appearance in the final, losing heavily to Leicester, and Myler admits it is time for Northampton to be crowned English champions.
"The league season is our acid test as a club and squad. We've progressed a lot this year, but it comes down to one day determining whether we've been successful or not," he said.
"That's bit of a funny scenario to be in, but it's what we must work hard for and hopefully we can do it. I believe it will come down to who plays best on the day.
"It's one each between us and Saracens in the league and we're expecting a tough battle, Saracens at their best.
"They have quality players, so I'm sure they're professional enough to overcome losing in the Heineken Cup final last weekend and get back on page for this game."
Myler was named man of the match against Bath in last Friday's European final, continuing a terrific season that could have seen him win his second cap in England's first Test against New Zealand on June 7 had be not been action against Saracens.
The coach of Northampton Saints Jim Mallinder has described last night's victory in the Aviva Premiership Semi-Final as 'absolutely tremendous', especially as his side lost to Tigers in last year's final.
"We've played Leicester numerous times since I've been here, we've won a couple but not recently and I think to win such a big game like that the semi final of the Aviva Premiership in front of our home fans was absolutely tremendous."