Former GP2 title contender Bruno Senna is to make a brief return to the category for next week's Jerez test.
The Brazilian will return to iSport – the squad that took him to second in the championship behind Giorgio Pantano last year – on the last day of the test, but only to assist the team.
"iSport will sign new drivers for 2010 and I will help them by providing a benchmark while working on the setup and performance of the car," said Senna.
"I got a call from team owner Paul Jackson and could not resist giving them a helping hand as we built a very good relationship during our days together."
Having missed out on a Formula 1 seat this year, Senna has spent 2009 racing ORECA's LMP1 car, and is looking forward to getting back into single-seaters.
"For me it is also a good opportunity to drive a single-seater again, as this year I have been mainly driving endurance prototypes in the Le Mans Series," he said. "I don't think it will take many laps at all to get back to where I was a year ago with this car."
He underlined that he had no intention of racing in GP2 again, and is committed to finding an F1 drive for 2010.
"Our latest talks proved even more exciting," said Senna of his F1 chances. "Everything keeps going well and the pace of negotiations has increased in the last few weeks. I'm looking forward to having good news in the coming days."