Sahara Force India driver Nico Hulkenberg will be in the seat of a Sauber car next year after the Swiss team confirmed the move.
The 25-year-old German is currently 12th in the Formula One drivers' championship standings with 49 points. "I'm really looking forward to working with the Sauber F1 Team," Hulkenberg said. "It's a well-placed team and very competitive.
"Plus it's a team in which young drivers have repeatedly delivered exceptional performances. I would like to take up that baton.
"The Sauber F1 Team is currently going through a very positive development and I'm certain that together we can achieve a lot. Until that time I will remain fully focused on my job with the Sahara Force India Team.
"I'd like to thank the management at Sahara Force India for giving me the chance to return to Formula One as a team driver."
Sauber team principal Monisha Kaltenborn added: "We've been observing Nico for some time now and his performances have been very persuasive.
"That was the case in GP2 and has continued into Formula One. An obvious highlight was how he scored pole at Interlagos in 2010 despite the most challenging external conditions. He clearly showed that he can seize the chance if it arises.
"But high spots like that are one thing; systematic teamwork is another -- and on that score I have confidence in Nico too. I'm sure he will fit in very well with the Sauber F1 Team. We look forward to working together with him."
Force India supremo Vija Mallya admitted his regret at losing Hulkenberg. "It has been a pleasure to have Nico with us for the last couple of years," he said. "At the end of 2010 we identified him as a star of the future and it has been rewarding to watch him develop his racing skills.
"Together with Paul (di Resta) he has done a brilliant job for us, helping the team score more points than ever before and giving 100 percent commitment every weekend.
"We would like to thank him for all his hard work and wish him well for the future. With three races remaining this season, we know Nico will remain totally committed and continue to deliver his best performances for the team."
The Indian team will now look for a new driver for the 2013 season, with German Adrian Sutil, who lost his place to Hulkenberg this season, the most likely replacement.