Schumacher?s long-time associate, Willi Weber, though has moved to quash speculation linking the German to a stunning return to Formula One, replacing his one-time mentee, Massa.
Weber said he was certain Schumacher would not be on the grid at Valencia in four weeks time.
"Whoever sits in the car at the next race in Valencia, it will not be Michael Schumacher. I am not 100 per cent sure; I am 200 per cent sure,? he told the Daily Mail.
"The pressure on him would be huge. He would be expected to win, but he has not driven this car. When Michael was racing he would get as close to perfection as possible. In this case, it would not be perfection; it would be a gamble - and that's not Michael's style."