119 In dispute is whether Mayne had a contract with PGA for Gunn to provide consultancy services to Mayne for a three year period after the demerger of MPG for which Mayne would pay PGA $100,000 per month and a "project by project success fee". The dispute has its genesis in discussions between Gunn and Dalziel on or about 21 January 2000 to discuss the terms of Mayne's purchase of PGA's shares in MPG. The fact and details of the discussion were not in question, which was summarised in point form by Cranwell, the director of operations at Mayne, in a facsimile to Gunn of the same date. That document recorded, amongst other things, that (1) Mayne would enter into a three year consultancy agreement with PGA, which would provide Gunn's services exclusively to Mayne and Gunn would undertake specific assignments; (2) the remuneration for the consulting was "to include" "$100K per month retained" and a "Project by Project success fee"; and (3) in consequence Gunn would step down as CEO of MPG, resign as a director of MPG, Gunn's employment agreement with MPG would be cancelled, and the consultancy agreement would be entered into. Further, the evidence showed that steps were taken by both parties for a new consultancy agreement. However no formal written consultancy agreement was ultimately made. On 15 February 2000, Gunn was diagnosed with a brain tumour and went on sick leave for three months from 1 March 2000 at his existing rate of pay. At the expiration of his sick leave, Gunn was told that Mayne did not require any further assistance from him through any formal consultancy arrangements.