Forget zoro at least 5 10 chapter. 
Everybody mention about zero healing thing.
How chopper heal zoro ?
When chopper is at MP ? That means zoro should come back in 5 minutes. Because after 5 10 minutes , chopper transform original form and will be moveless.
If ceaser does not give any MP development except time , I don't give any probability chopper to heal zoro
Only option is Marco in someway.
When we think Marco vs King don't finish suddenly,  zoro won't appear 5 10 chapter until Marco fall. 
After that we can talk how Marco heal zoro sacrifice or something.