I hear asx 300 re balance happening at 4pm Friday afternoon when...

I hear asx 300 re balance happening at 4pm Friday afternoon when Swm fall out of asx300 .
wondering if they are planning on using some buy back money to buy a large chunk of the shares that will be being sold when re balance happen.
will be some large holders need sell so price might be excellent value for Swm to buy large chunk back at a price they initially not dream of in one off sell down due to rebalance.
maybe not but was just thinking if it a possibility to use buy back money wisely when sellers flock to sell Friday afternoon