Well, IMO, if such a possiblity come about, I couldnt see fox taking no less than $2.50 but then thats just my opinion. Which maybe would equate to a about a 2:1 split if or should this be the case.
Anways, watch out for CBA taking stronger position in WSA, as I feel this would be one possible indicator to look for, should such scenario ever unfold, IMO~!