When directors (and their close relatives and related trusts) sell shares to a person (or enter into options, derivatives or other transactions) as a result of which that person is required to make an offer under this Paragraph, the directors must ensure that as a condition of the sale (or other relevant transaction) the person undertakes to fulfil his obligations under the Paragraph. In addition, except with the consent of the Panel, such directors should not resign from the board until the first closing date of the offer or the date when the offer becomes wholly unconditional, whichever is the later.