Reaction: European Champions Cup draw

Saracens were the first team to be drawn out and were joined by Ulster, Toulouse and Champions Cup newcomers, US Oyonnax. This pool could be a classic, with Ulster and Toulouse both former winners of the European Cup and Saracens who have represented the Aviva Premiership so well in the last 3 years. Ulster will be after revenge with Saracens after their controversial quarter final defeat at Ravenhill in the 2013/14 season where Jared Payne was sent off in a game changing moment. Toulouse had a disappointing campaign last year with a quarter final spot being snatched away from them in Round 6 by Bath and face a tough task this year. While for Oyonnax , it will be a difficult welcome into the Champions Cup as they get ready for their first campaign in the competition.

Group Winners: Saracens - The Premiership side are so strong in Europe and have reached the semi finals 3 times in the last 3 years. Ulster will run them close so when these sides meet,  it could be a group decider.

Last year's finalists Clermont will be joined by Ospreys, Exeter Chiefs and Bordeaux. If you were to pick one obvious pool winner, the favourites would have to be Clermont. However the talent of Exeter Chiefs with their young squad and the additions they've made, especially in Geoff Parling, it will certainly be interesting to see how they fare after a strong Premiership campaign. Ospreys will always bring a challenge too and the Liberty Stadium is always a tough place to visit. The Swansea based side will be looking to reach the knock out stages for the first time since the 2009/10 season. Bordeaux qualified for the competition through the playoff system after a narrow victory against Gloucester, the addition of Adam Ashley-Cooper will boost the side in the south of France but they will find it tough to challenge fellow Top 14 side Clermont.

Group Winners: Clermont - The Yellow Army should on paper win this one, they've reached the final twice in the last 3 years and are a phenomenal side at home. Either one of Ospreys or Exeter could finish second.

Pro12 champions Glasgow are joined by Northampton, Racing 92 and Scarlets. Probably one of the more open pools in the competition. Anyone out of Glasgow, Saints and Racing could win this group. Glasgow will look to tackle Europe now after a fantastic domestic season but have always struggled against the top sides in Europe, after going close last year against Toulouse on both occasions but failing to get the win. Saints have been a force domestically for the last couple of years but have struggled at times to replicate that form in Europe. They suffered a humillating defeat to runners up Clermont in the quarter final and another bad defeat in the pool stages to Racing. By the time the competition kicks off in November, Racing 92 will have the highest paid player in their ranks with All Black legend Dan Carter lining up for the side. Last year they were the only side last year to go unbeaten through the pool stages. Scarlets could struggle in this group, a tough side to travel to as they showed last year against Leicester but on the road they might find it tough.

Group Winners: Racing 92 - The loss of Sexton & Roberts may hamper the side but the addition of Dan Carter should soften the blow. A tough side to breakdown but think they will edge it. Saints & Glasgow will challenge and it will be no surprise if this one goes down to the wire.

Top 14 winners Stade Francais are joined by Munster, Leicester and Treviso. 2 time winners Stade are back in the big time after a year out of the competition last year. The Paris based side have struggled in recent years but with a Top 14 title coming into this season, they could be a force once again. Some may say Munster aren't the team they once were in Europe with failing to reach the knock out stages last year and the loss of their talisman in Paul O'Connell. However it is undeniable that the men in red have a love affair with the competition, it will be interesting to see how the province fare in the competition this season. Leicester will challenge in the group also and will be looking to reach the knock out stages for the first time since the 2012/13 campaign. Treviso will find the pool tough and it is hard to see them recording a win against such tough opponents.

Group Winners: Leicester - So tough to call Pool 4, away form is crucial and if Tigers play to their potential, they might just edge this one. Munster are likely to struggle without O'Connell and Stade can be hit and miss at times. Will certainly go down to the wire.

Finally we come to Pool 5. This one is going to be a belter with current champions Toulon paired with Bath, Leinster and Wasps. Where do you start with this pool? Toulon have dominated the competition, recording 3 European titles in a row and have been unbeaten at home, losing just 3 times in 3 years on the road. The loss of Bakkies Botha and Ali Williams will not be as much of a blow with the additions of  Paul O'Connell, Ma'a Nonu and Samu Manoa just to name a few. Bath have been a breath of fresh air to English rugby and have gained many plaudits in the last couple of years. They started last years campaign with 2 defeats but managed to qualify for the knock outs, where they were knocked out after a narrow 18-15 defeat at the Aviva Stadium. With the likes of George Ford, Jonathan Joesph and Antony Watson in the backs and a strong forward pack including Francois Louw and Sam Burgess, they will challenge in this group down to the wire. Leinster have a great history in the competition and always seem to grind out results when needed. They took eventual winners Toulon into extra time and were unlucky not to go through to the final. With a new coach they could be a different team and it will be interesting to see how they get on. Wasps had a superb season last year and managed to sneak into the quarter finals where they played their hearts out against Toulon and were in touching distance throughout. Domestically they have been rapidilly improving and with some handy additions, they will be looking to shock the big boys of this group.

Group winners: Toulon - Hard to look past the reigning champions with the amount of all stars they have next year. Bath or Leinster will take the group down to the wire with one of them sure to claim a best runner up spot.