The latest reports are that Marc requires a 3rd surgery on his arm as the bone has not healed well enough to be structurally sound.
The 3rd surgery will most likely invoice a bone graft from his pelvis and has a long recovery time (12 weeks of immobilisation/restricted movement before rehab can even start).
Honda aren't confirming this yet, but they are not denying it either.
Apparently, this is why Dovi hasn't taken a test rider role for next year. He's thinks there is a good chance that he will be jumping on Marc's bike at the start of the season...
https://the-race.com/motogp/marquez-faces-further-blow-that-could-delay-motogp-return/
Macca
The 3rd surgery will most likely invoice a bone graft from his pelvis and has a long recovery time (12 weeks of immobilisation/restricted movement before rehab can even start).
Honda aren't confirming this yet, but they are not denying it either.
Apparently, this is why Dovi hasn't taken a test rider role for next year. He's thinks there is a good chance that he will be jumping on Marc's bike at the start of the season...
https://the-race.com/motogp/marquez-faces-further-blow-that-could-delay-motogp-return/
Macca