Valentino Rossi's is looking forward to half-brother Luca Marini's grand prix debut as a wild-card in this weekend's Misano round of the Moto3 World Championship.

The 16-year-old, currently second in the Italian Moto3 championship, will ride an FTR Honda for the Twelve Racing team.

"I'm very, very happy for Luca," smiled Rossi at Misano on Thursday. "I cannot wait for the result. I know that for him it is very difficult: First race in the world championship, first wild-card.

"But it is very important that he understands and grows up from this experience. When you go on track with the top guys in the world you have to learn the way to improve your riding style and try to be faster, for his second part of the season."

Valentino and Luca have the same mother.