"We will have to rethink it and it is going to be a really tough game," he said.
"I was really impressed with the way they played against Toulon and we certainly know it is going to be a challenge."
"We really enjoy playing here (Milton Keynes), it's a really good stadium and the crowd were magnificent.
"We've beaten Ulster, we've beaten Perpignan before in Europe and there's no reason why we can't do it again.
"We have not got any players in the team who have played in the semi-final of a Heineken Cup so we're inexperienced in terms of that, but we are learning all the time, and we're all looking forward to that experience."