Nik is joe's next door neighbour. He is illiterate, suffering from severe depression and relies upon Joe for advice and support l. Nik wants to sell some of his land and Joe agrees to buy it. Nik accepts the first price Joe offers as he trusts him. He did not seek independent legal or financial advice. Nik signed the contract for the sale on the spot. Nick's brother has now called Joe to express his concern about the contract price and the deal as a whole, but Joe wants to enforce the contract.

Can Nik withdraw from this contract and was there a case of undue influence by Joe?