You are an assistant attorney for FUN Company, discuss the legal issues and likely outcome of the case below:

Several weeks ago, the CEO of SAD Co. met with the CEO of FUN for lunch to discuss potential business ventures between the two companies. After a few shots of whiskey, SAD's CEO tells FUN's CEO that SAD is interested in purchasing a commercial building that FUN owns in a central area in West Palm Beach. SAD is interested in this building due to the specific location in which it is located. SAD believes that owning a building in that specific location will significantly increase your business. The CEO of SAD offers the CEO of FUN to purchase that specific building for $ 5 million. The CEO of FUN responds that FUN estimates that the building is worth $ 9 million and that they are willing to sell the building for that price, since they have no use for it. The SAD CEO pulls out a $ 1.00 bill and hands it to the FUN CEO and says "this is my payment so I have time to talk to my board and see if we are willing to pay $ 9 million." The CEO of FUN laughs and puts the $ 1 bill in his pocket. Both CEOs shake hands, say goodbye, and leave. The next day, SAD's CEO calls an emergency meeting to discuss the $ 9 million purchase price and the board agrees to purchase the building for $ 9 million. Immediately after the meeting, the SAD CEO calls the FUN CEO on the phone and tells him that SAD agrees to buy the building for $ 9 million. The CEO of FUN tells the CEO of SAD that FUN has decided not to sell the building because after their meeting yesterday they realized the potential that the building really had. SAD is now demanding that FUN keep their word and sell the building to them for $ 9 million.