The cash alternatives to be offered are locked in by the new...

The cash alternatives to be offered are locked in by the new Clause 4.2 as a term of the Deed. To change that would require drafting of another Amendment Deed, which took two weeks last time. Seems pretty unlikely.

4.2 Scheme Consideration

(a) a cash amount of $0.146; or
(b) a cash amount of $0.207 if, not later than the day that is (unless otherwise agreed in writing by ResApp and Pfizer) 9 Business Days before the Scheme Meeting, the Qualifying Confirmatory Data Readout Condition has been satisfied or waived by Pfizer in writing.

It’s clear that $0.207 is the upper limit that the current Deed allows.