McLaren Mercedes test driver Pedro de la Rosa insists he hasn't given up on the possibility of returning an F1 race seat for the 2010 season despite appearing to be out of the running at Campos Meta.

De la Rosa had appeared a hot favourite to secure a drive with the Spanish team for its debut season until team boss Adrian Campos revealed that a lack of sponsorship was set to work against the 38-year-old - with GP2 pair Pastor Maldonado and Vitaly Petrov believed to be waiting in the wings and with financial backing behind them.

While the hopes of a Campos driver may be fading, de la Rosa revealed that he continues to talk about a race drive with a number of teams with USF1 being one possible option given the team's announcement that it will have a European base at the Motorland Aragon circuit in Spain.

De la Rosa also revealed that he would be happy to combine any racing activities he can find alongside his testing duties with McLaren.

"It's still early," he was quoted by the Spanish news agency EFE. "There is no hurry to make a decision. It is true that USF1 and Motorland have reached an agreement, but personally I do not know what is going to happen after that or who I could drive for.

"I would be very happy to be at McLaren Mercedes as the reserve driver and arrange my work to race in another team as well, or simply go to another team to race. I'm doing everything I can to return to F1 but I don't know what will happen, that is the simple answer."

De la Rosa added that, while he may not have the financial backing enjoyed by some drivers, he had other things to bring to a team.

"With sponsors everything would be infinitely easier," he said, "but I believe that my experience in F1 is very important. My experience is my sponsor."