LONDON: Red Bull and Williams are opposed to Ferrari's request to let Michael Schumacher test in Felipe Massa's F60 car as the seven-time world champion prepares to return to F1 in place of the injured Brazilian.

F1 regulations do not allow track testing during the season, although Schumacher completed 70 laps in a 2007 version Ferrari at Mugello near Florence last Friday and there has been speculation the sport's bosses may bend the rules given the circumstances.

Red Bull's team principle, Christian Horner, said on Monday the 40-year-old Schumacher should not be treated any differently to Spanish teenager Jaime Alguersuari who made his F1 debut for Toro Rosso in Hungary last month despite previously only having driven the car in a straight line speed test.