Klien, 27, has raced in F1 for both Jaguar and Red Bull and has been a test driver for Honda and BMW Sauber.

BBC: Hispania sign Austrian Christian Klien as test driver

Sebastian Vettel's Red Bull and Robert Kubica's BMW Sauber suffered engine problems on day one in Monte Carlo.

BBC: Rosberg sets Monaco practice pace

Formula 1's governing body and Fota have become embroiled in an increasingly bitter feud over Mosley's presidency and his plans for the 2010 season, which include budgetary and technical changes that have been met with opposition by Ferrari, Brawn GP, McLaren, Red Bull, BMW Sauber, Toyota, Renault and Toro Rosso.

BBC: Mosley hits back at calls to quit