Europe preview quotes: Sauber

Sergio Perez: "I flew home from Montreal, and back in Mexico I spent the time preparing myself for the next race and trained together with our physiotherapist. I feel perfectly well and I'm very much looking forward to racing in Valencia. Without doubt it is an advantage that I know this track well. In 2009 I was on the podium after both GP2 races and last year I had pole position."

James Key, Technical Director: "Valencia is a smooth stop and start street circuit. It's not so bad for mechanical grip, as the surface is quite flat. The emphasis will mainly be on braking stability in low speed corners and traction. There will be an unknown in Valencia, because we will have a new Pirelli medium tyre compound which we ran in Canada. However, that was on a different track and most probably different track conditions with regard to temperature. This is a tyre which we'll have to understand and get working quite quickly on Friday in preparation for the rest of the weekend. We will have some modifications on the car, including a slightly changed front wing and some other parts. We hope our performance will be back on the level we had before Canada, where we felt we didn't perform as we wanted to in dry conditions. Also in the meantime we've been working hard on the balance of the car to try to ensure we can have a better level of performance in Valencia. We hope to have Sergio back in the car and look forward to working with him during the weekend."