Nine-time World Champion Valentino Rossi has said he think’s Jack Miller’s jump from Moto3 to MotoGP in 2015 is ‘brave’ and he has advised the Aussie youngster to be ‘quiet and clever’.

The Doctor has spoken with Miller about the move and believes he must exercise caution in the first half of next year but added he thinks that will be hard because of the racers’ nature - to want to win.

“Taking the time will be the bigger challenge for Jack because it is very easy to say now I have time, I will arrive quiet but when you are on the track you want always to arrive in front and give the maximum. The step is very big, I think Jack is very brave to try,” said Rossi, speaking at Aragon.

“I spoke with him and he feel he wants to do it like this, so this is the most important. The bike will change a lot with speed and also the brake and the tyres. He has to be clever, quiet, try to understand step by step and try for the good result at the end of the season.”