Nick Heidfeld admits Michael Schumacher's decision to return to Formula One has dealt a big blow to his chances of driving in F1 this year.
The German was one of the front-runners to partner Nico Rosberg at Mercedes GP, but once Schumacher declared his interest in the race seat there was only going to be one winner.
"Of course over the holidays my current job situation did not let go of me, even after Michael Schumacher's decision was published just before Christmas," he wrote on his official website.
"This is certainly a great thing for Formula 1 and I wish good luck to Michael and Mercedes.
"This decision affects me directly because it means there is a relevant less space for next year. I am not naive when I say, especially after the past few weeks, a lot of unexpected things can happen in Formula 1."
Renault, Toro Rosso, Campos Meta and BMW Sauber still have to confirm their second driver while newcomers USF1 are yet to reveal their two drivers for the 2010 season.
Heidfeld, who spent three seasons at BMW, insists he has not given up hope of landing a drive for this year.
"Now we have to look forward and focus on the best long-term option for my future in Formula 1," he said. "I will continue to train hard, conduct talks with the appropriate people and to challenge my chance with all my might.
"I hope in the coming weeks to be able to announce something concrete about my future plans."
