Peter leased commercial office space from the lessor on the basis that Dan was going to occupy (sublease) the north-west corner of the premises. When the parties realised that the lease prohibited a sub-lease to Dan, and that Dan would not have lawful occupation, Dan refused to go ahead with the deal. Peter's expectation was that a sub-lease contract would have been made with Dan. Required: Discuss the legal circumstances of the agreement between Peter and Dan