John's Responsibilities to His Employer

John is a portfolio manager at a financial advisory firm. Recently, he was approached by a former client seeking investment advice because they are considering a substantial investment in several sectors. John no longer works for that client but is aware that some of the advice he could provide might not only benefit them but could potentially enhance his own reputation and lead to future business. However, he has a contract with his current employer that strictly prohibits soliciting previous clients for personal gain.

Which of the following actions is John allowed to take under the CFA Institute's Code of Ethics and Standards of Professional Conduct?