Former McLaren driver Heikki Kovalainen says his focus is on returning to the F1 grid as the Finn prepares for two Friday morning outings in Spa and Italy.
Kovalainen drove for Caterham for three years between 2010 and 2012, and this year he was drafted in as a reserve driver making 2 appearances in Bahrain and Spain as the Malaysian-owned team looked to improve on a poor start.
His re-emergence for the next two races will once again spark speculation the Finn could be in the running for a return to the sport in 2014.
Speaking to Finnish media Kovalainen said his return was because the Caterham engineers "want his opinion" on the latest upgrades.
Though the 31-year-old admitted that personally he is focused on returning to the F1 grid in 2014.
"It has been a long year," said Kovalainen.
"Although I have not been driving, I have succeeded in creating a better relationship with the team," he revealed. "With Tony (Fernandes) and others now it is very good."
Since 2012, the one-time Grand Prix winner split with management firm IMG, which many are pointing to as the reason why Kovalainen has not returned to F1 in 2013.
"The most important thing," he continued, "would be to get back to racing. I cannot say whether the possibilities are good or bad.
"But if it's just about money again, then the return is not in my hands," said Kovalainen.
"Everyone knows my situation -- I do not come with money and, if I do get a sponsor, then I'll take the money for myself," he smiled.
The F1 campaign gets back underway this weekend, with the drivers heading to Spa for the Belgian Grand Prix.
German Sebastian Vettel leads the championship at the half-way point, with Kimi Raikkonen, Fernando Alonso, and Lewis Hamilton all battling to stay in touching distance of the reigning champion.
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