Annie is the owner of farmland. She has lodged an application for subdivision with the local council. Matt, who works on the farm, is interested in purchasing that part of Annie’s land which is next to the river because he likes the outlook of the property. Matt asked Annie if she would sell the land to him and Annie said she could not sell the land until the approval of the subdivision was given but in the meantime, she was happy to let Matt “camp” on that part of the land which is next to the river. Annie and Matt intended that a formal contract of sale would be prepared by Annie’s solicitor upon approval of the subdivision and payment of a 10% deposit by Matt. Matt asked Annie if she could confirm the intended sale price of the land. Before Matt started camping on the land, Annie’s husband, Joe, gave Matt a letter which set out the sale price (including the 10% deposit) of the land. Joe signed the document but Annie did not as she was collecting the children from school when Matt called over to the farmhouse to collect the letter. A week after Matt signed the letter, he proceeded to build a shed on the land and to have electricity brought to the shed and he also installed a water tank. Annie knew of Matt’s building works as the trucks drove past her house on the way to Matt’s “camp” and she had asked Matt to make sure that the trucks delivering the materials to the site drove carefully past the house as she was concerned the children could be run over when playing outside the house. The application for the subdivision was refused and Annie served Matt with a notice to vacate the property. Matt argued that Annie’s notice was invalid as a binding contract for the sale of the land existed between the parties. He also argued that in the alternative, Annie was estopped from denying him the right to buy the land beside the river.You are asked to advise Matt with reference to the common law of contract.Please also consider and apply any the decision from any relevant cases you have studied in lectures.