The Shadow Kingdom and the Papal State

[CosmicChronos]

Hello!
I'm playing a game as Austria basically following Reman's guide. I have my PUs over Bohemia and Hungary, allied with Castille/Aragon, Poland(not PLC) and Milan(to fight Venice).
What Im wondering is how to full annex the Papal State and then spit them out since they own Avignon, a land-locked province?
Cheers

 

[Nmo]

Avignon is a releasable OPM. You'd just have to occupy it.

 

[CosmicChronos]

Thanks!