Ferrari urges Felipe Massa to raise his game in Monaco

At the start of what was viewed as a vital campaign for the Brazilian driver, he has scored just two points so far, with team-mate Fernando Alonso jointly leading the world championship on 61.

Massa's lack of results means that Ferrari is currently lying fourth in the constructors' championships behind Red Bull, McLaren and Lotus.

In a statement issued on its website after the Spanish GP, Ferrari highlighted Massa's poor form this year compared to previous seasons, and said it was clear what was expected of him.

"In Montmelo, Felipe was very unlucky, both in the race and in qualifying, but everyone, he more than anyone, is expecting a change of gear starting right away with the Monaco Grand Prix," said Ferrari.

Although Ferrari remains committed to Massa for now, AUTOSPORT understands that the outfit is now seriously evaluating options for the future - both short and long-term - if the situation does not change.

While Sauber driver Sergio Perez remains a prospect for the longer term, Ferrari is also understood to be evaluating Force India duo Paul di Resta and Nico Hulkenberg as well as Lotus test driver Jerome d'Ambrosio.

Although the latter's inclusion as a candidate is a surprise, the Belgian does have the advantage of being available immediately, and would be happy to take a half-year deal which would allow Ferrari to spend longer thinking about its options for a new team-mate for Alonso in 2013.