The team retains the same driver lineup from 2013.
According to Blick newspaper, Hulkenberg and his manager Werner Heinz are having "sleepless nights".
Domenicali commented "Ferrari is a heavy burden for a young driver"...
Nicolas Todt manages Jules Bianchi and claims that Ferrari wants the Frenchman to find a ride with a middle group team.
Even though it was the Young Drivers 3-day test, it did include the Formula One drivers as they were testing the newest of the Pirelli tyres.
Among the attendees were Bianchi, Chilton, Rossi, Kovalainen, Valsecchi, Gene, Button, Hamilton, Buemi, Rosberg and Perez.
Andy Webb, Marussia CEO: We have seen the strength of that support again in the last few days following the very pleasing announcement of our new powertrain partnership with Scuderia Ferrari.
Pat Symonds comments on the fact that a an experience top-level Formula One driver could race the Marussia cars faster than Bianchi and Chilton
Bianchi was close to be replaced by de la Rosa for the German GP due to stomach upset,but the rookie Frenchman recovered sufficiently to duly qualify ahead of teammate Max Chilton on Saturday.