Neither of Caterham's current race drivers have been confirmed for the 2014 season.
Giedo van der Garde and Charles Pic, both heavily sponsored, were new to the team this season, but Caterham has struggled at times and so the experienced Heikki Kovalainen is back on the radar for a possible 2014 return.
Widely regarded as the most secure of the pair is Frenchman Pic, who has the solid backing of the Lagardere Group and, it is believed, a longer contract.
But Pic's manager Olivier Panis admitted to French television Canal Plus that: "You are never 100 per cent sure.
"In any case, stability is important for Charles, but we have been approached by other teams.
"I think that...
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