In what context will Zoro fight Mihawk?

[SSJ2]

Is Cross Guild going to form some rivalry with the Straw Hats somehow? I can’t see any reason for these two to fight right now.

 

[Symbiote]

For the title. Any other fight would be pointless.

 

[Yoshi]

Yeah. I can even see them purposefully abstaining from fighting each other if the timing was wrong.

 

[sei'taer]

They'll cross paths in the final war.