Stade Toulousain are boosted by the recent return of talismanic centre Yannick Jauzion to partner Florian Fritz in what should be an intriguing battle of the centres with D'Arcy and O'Driscoll. The clashes in this tie are mouthwatering none moreso than that of the fly halves with arguably the form player of the tournament, Felipe Contepomi pitting his wits against Frederic Michalak. The fact that Trevor Brennan will be lining up against his former province is sure to add some spice to the heated forward exchanges. Stade Toulousain will start as favourites but as has been proven in the pool stages there are some frailties in their defence and Leinster certainly have the ability to expose them, as do Stade Toulousain have the abilty to destroy Leinster up front and starve them of possession. Should be a corker.