Vitaly Petrov's manager has raised questions about the Russian's future in the sport unless he is able to generate more support in his home country.
Petrov has spoken of his desire to remain in F1 amidst fears over his place at Caterham, with the Norfolk outfit yet to announce either of their drivers for 2013.
However, there appear to be more factors in play, with financial backing a possible problem for Petrov according to his manager, Oksana Kosachenko.
"If the presence of a Russian driver in F1 will be interesting to no one but Vitaly Petrov and Oksana Kosachenko, we'll find what to do outside grand prix racing," Kosachenko is quoted as telling Sport-Express.
"F1 is great - and very prestigious - but, for Vitaly, it's a job that brings no money. Why? There are many reasons but, in Russia, where it's already difficult to 'sell' an athlete, it is almost impossible to 'sell' an F1 driver."
