Two-time Heineken Cup champions Toulouse will have an away draw in the semi-finals if they get past Cardiff Blues at home in the last eight.

And 2006 winners Munster will also have to do it the hard way after being drawn at Saracens or the Ospreys if they win their quarter-final on the road at Gloucester.

But all eight remaining clubs - London Irish play Perpignan - chose to concentrate on their quarter-finals rather than what might await them in the last four.

``It's difficult to see past that home quarter-final. It's going to be a fantastic game against Munster,'' said Gloucester coach Dean Ryan.

``If we come through that we have to go to Saracens or the Ospreys, but to be honest all our thoughts are dominated by Munster.

``It's just a great feeling to be at this level of the competition with your side. If we get our performance right at Kingsholm you never know but we are up against a side which is experienced at this level.

``We've got home advantage but we have to play well.''

The Ospreys, along with their opponents Saracens, London Irish and Cardiff Blues (as a region), will be making their first appearance in the knockout stages.

``We have a tough brief winning at Saracens but the incentive of winning there has been doubled with a home draw if we get into the semi-finals,'' said Ospreys coach Lyn Jones.

``There is plenty there for the players to look forward to playing on this stage.

``On the road isn't a problem for us. We have always fronted up well away from the Liberty Stadium.

``Saracens is a different challenge for us. It's a ground (Vicarage Road) we have never played at and it's a fixture we have never had before.

``What Saracens like to do is play football and it's a game we are looking forward to.''

Saracens, the number one seeds admit they are wary of the threat posed by the Ospreys.

``The quarter-finals will be a bit of a learning curve for us and the Ospreys will offer us something of a different challenge,'' said Saracens director of rugby Alan Gaffney.

``The Ospreys are a very good team and have a very strong squad. They have got a strong tight five, very strong back row and a lot of talent in the back line with Shaun Marshall, James Hook and Gavin Henson.

``If they get their act together they will be very hard to beat.''

The ERC have confirmed the times and dates of the four quarter-finals.

London Irish kick-off the weekend on Saturday, April 5 when they take on Perpignan at 3pm. Gloucester clash with Munster at 5.30pm.

The next day Saracens face the Ospreys at 12.30pm with Toulouse v Cardiff Blues scheduled for 4pm.

Meanwhile, more than 35,000 tickets have already been sold for the final at the Millennium Stadium on Saturday, May 24.

And with 15,000 tickets reserved for the fans of the two finalists, that leaves fewer than 15,000 for public sale.

``We are delighted with the advance sales for the final,'' said ERC chairman Jean-Pierre Lux.

``We have already staged four hugely successful finals in the city of Cardiff and it is exciting for the eight clubs still in the tournament to be aiming to play at the magnificent home of Welsh rugby.''

Quarter-final draw:
Saracens v Ospreys
London Irish v Perpignan
Gloucester v Munster
Toulouse v Cardiff Blues

Ties to be played on the weekend of 4/5/6 April.

Semi-final draw:
London Irish/Perpignan v Toulouse/Cardiff Blues,
Saracens/Ospreys v Gloucester/Munster.

Ties to be played on the weekend of April 26/27.