Toulon coach Diego Dominguez says victory over Saracens in the Champions Cup is non-negotiable.
The former European champions host the current Champions Cup champions on Saturday and Dominguez has urged his players to win at all costs.
"There is no better as draw against the champions at home in round one,” Dominguez said.
“In this competition, perhaps you are entitled to a misstep away from home, but not at home. On Saturday, we want victory at any price. It will not be easy but we will do our best.
"It's very good to start like that. The challenge is high, it will be a personal and unique challenge for every player. In front there are six players in the England team, the best team in the world behind the All Blacks at the moment.
"If that does not motivate the players then I do not know what will. My players will be highly motivated when they take the field on Saturday. They are aware of the importance of this game."
Toulon will be able to call on the likes of Leigh Halfpenny, who did not feature in last season's competition because of injury. But they still face an uphill battle against Saracens, who overcame Wasps last week to return to the top of the Premiership standings. And former Italy fly-half Dominguez is wary of the threat they carry.
"Saracens have really developed as a team over the last two years," he said. "The group have been together and they have forged some strong combinations with players like the Vunipola brothers. They attack well, they defend well, they have speed and good finishers. They have all the things that the big teams have, like us.”