There are 6 requirements for a verbal contract:
An offer. -- they had this
An acceptance. -- the contract was accepted
Competent parties who have the legal capacity to contract. - they both have the right to make this decision
Lawful subject matter. this is not an illegal operation
Mutuality of obligation. Both parties are obligated to do something in this case.
Consideration. if there were discussions of payment, then yes this is a legally enforceable contract.