Repsol Honda has confirmed that Dani Pedrosa will not be fit to ride in this weekend's Dutch TT at Assen - and that Hiroshi Aoyama will take his place at the factory HRC team.
Pedrosa will miss his third race in succession after breaking his collarbone in a controversial clash with Aoyama's Gresini Honda team-mate Marco Simoncelli, at Le Mans last month.
Simoncelli - like Repsol riders Pedrosa, Casey Stoner and Andrea Dovizioso - is already a full factory HRC rider, but Aoyama usually steers only a satellite spec RC212V.
2009 250cc world champion Aoyama, a MotoGP best of fourth in the wet of Jerez earlier this year, will be replaced at Gresini by HRC test rider Kousuke Akiyoshi.
“I would like to say thanks to HRC and my team San Carlo Honda Gresini for letting me ride this factory bike, I think it's a very good opportunity for me,” said Aoyama.
“On the other hand I'm sorry for Dani because it means he is still at home and suffering with his injury. I hope he recovers soon.”
Pedrosa had only just solved numbness problems in his left arm, caused by a plate inserted to heal a broken left collarbone last October, when he broke the right collarbone in his tangle with Simoncelli.
The Spaniard, runner-up in last year's championship and winner of this year's Estoril event, has since undergone two surgical procedures.
Pedrosa's next opportunity to return will be at the Italian Grand Prix on July 3, but he has already slipped to fifth in the championship, 55 points from Stoner.