What is the extent of the pre-emptor's right if the original partner denies the purchase was for them, yet the buyer insists on affirming the purchase for that partner?

Primary text

If the original partner denies that the purchase was made for them and waives their pre-emption right, but the buyer persists in affirming the purchase was made for that partner, the claimant (the pre-emptor) has the right to take the entire property because there is no challenger to their entitlement. Alternatively, the pre-emptor may choose to take only half due to the buyer's admission establishing their right to that specific portion.