Vitaly Petrov's manager says she has suspended talks about the Russian driver's F1 future amidst concerns that he could fail to secure the backing needed to earn a drive on the grid for 2013.

Petrov inked a late deal with Caterham for 2012 after missing out on a drive with the re-branded Lotus team and has matched the team's best result of the year with 13th in the European Grand Prix in Valencia.

The 28-year-old was reported to be talking to a number of teams for the new season, but Oksana Kosachenko now says talks have been halted until the financial support required is in place.

"We've taken a timeout now," she told RIA Novosti. "I need time to consolidate all our financial possibilities and understand if there's sense in continuing any talks.

"If there's no money, then there's no drive. I'm not prepared to hold talks all winter like last time."

Kosachenko had previously said she was in talks with three teams aside from Caterham about a deal for 2013, although the loss of Russian government backing may now see Petrov forced to explore options elsewhere.