Formula 1 team boss Eddie Jordan has urged Williams to consider his driver Nick Heidfeld for next season.
"I think Nick would be a brilliant choice. If Williams lose both its drivers, which now looks likely, Nick would be a perfect guy," Jordan said ahead of this weekend's Spanish Grand Prix.
"He's a consummate professional and I'd be very happy for us to get him in there. They'd be crazy not to be talking to him."
BMW-powered Williams, last season's runners-up to Ferrari, have a list of candidates to replace Juan Pablo Montoya after the Colombian signed a contract to join McLaren in 2005.
Germany's Ralf Schumacher - who started his career with Jordan before moving to Williams - could also be leaving at the end of the year with speculation linking him to Toyota.
Jaguar's Australian Mark Webber is seen as the frontrunner but plenty of drivers - including former champion Jacques Villeneuve - could be in the frame for the most desirable vacancy in Formula One.
Heidfeld joined Jordan from Sauber at the start of the year.