This contrasts with a contract which is implied by actions of the parties. An implied contract can be either implied in fact or implied in law. A contract which is implied in fact is one in which the circumstances imply that parties have reached an agreement even though they have not done so expressly. For example, by going to a doctor for a physical, a patient agrees that he will pay a fair price for the service. If he refuses to pay after being examined, he has breached a contract implied in fact.
This is a definition above Rhino-and don't tell me that witnesses would not be involved.And how do you know that no contract is in place. Tod Viney met with the club after the match last week and so did Jack.