After two tough seasons at Ducati, where he claimed just three podiums, seven time MotoGP champion Valentino Rossi is returning to Yamaha - alongside newly crowned double champion Jorge Lorenzo - for 2013.

But what will be the minimum needed for 2013 to be a considered a success by Rossi?

It's a simple question, but not so easy to answer.

CLICK HERE to vote from a shortlist of options (after which you will see the present results) and explain your choice in the comments section below...