"Obviously we are hoping that this return will come at the Czech Republic Grand Prix, but we will be monitoring John's recovery very closely and we have no intention of putting him back on the bike before he's ready. If this means he doesn't race at Brno, then that's how it will be, because we don't want to risk making things worse by allowing him to return before he is fully recovered," he declared.
Bartholemy added that, whilst there will be no replacement rider at this weekend's Sachsenring event, an announcement is imminent regarding a substitute rider for the US Grand Prix.
"Now we know the full extent of John's injuries we are looking at the possibility of running a replacement rider at Laguna Seca," he confirmed. "We will make a further announcement about this ahead of this weekend's German Grand Prix."
Bartholemy has previously revealed that Kawasaki's AMA riders Chaz Davies, Roger Lee Hayden and Jamie Hacking top his list of candidates to steer the second ZX-RR alongside
Anthony West at Laguna Seca.
Kawasaki had been interested in placing troubled Ducati rider
Marco Melandri on Hopper's vacant ZX-RR, but the Italian factory stated that Melandri will remain on a Desmosedici until at least Laguna Seca.