Kevin Magnussen has been linked with Pastor Maldonado's seat at Renault amid suggestions that team representatives have travelled to Venezuela to discuss late sponsorship payments with PDVSA.
If PDVSA is in breach, it could open up the possibility of a change.
Magnussen himself is believed to have some backing from Denmark, and he has long been associated with the Bestseller clothing company and its brand Jack & Jones.
Magnussen had discussions with Lotus F1 management last year, but they ended when Jolyon Palmer was formally confirmed for 2016 on October 23.
It was not clear how much of a chance Magnussen really had, as it's been suggested that the Englishman was always going to get the race seat after as part of an ongoing two-year deal.
Sources indicated that Renault was not entirely happy with the prospect of a Maldonado/Palmer line-up for its first year as a works team, but was resigned to the fact that contracts had been signed by the Lotus F1 management, with useful sponsorship coming through.
However, discussions with the Dane have restarted, and Magnussen is known to have visited Enstone last week.
Even if there is no change to the 2016 race line-up, a reserve driver role with the prospect of an upgrade in 2017 would be a good solution for the former McLaren man, despite his reluctance to spend another year without a racing programme.
Magnussen could possibly dovetail a Renault reserve role with a Mercedes DTM drive. Meanwhile it's understood that he is also still very much in the frame for a race seat at Manor.