Waiting for equity to be released

Hi folks,

Say I want to sign a contract of sale this weekend in Melbourne for an IP, and so I am required to put down a 10% deposit, and I do so with my own cash.

Can "swap" out my own cash with the equity I'm waiting to be released from my current IP when it comes time to settle? So that I can have tax deductability for the whole lot and not burn my cash buffer?