Move - from here to there

How shall one judge what other person wants and what (what all) he/she will be ready to forego to get it. How to negotiate?

My organisation would like me to move. That costs - at personal level, and in monetary terms. Monetary part will surely be taken care of. Hopefully the personal cost can be paid off by professional gains. And i share the flat with one of my best friends there. Lets see.....

Somethings on personal front need to be cleared/ settled before i move. It includes obvious ones like rentals and fees, and belongings to be moved from here to there; and few non-obvious but rather crucial one's - real personal choices.