Final answer:
A manager's unmet expectations for reentry training and mentoring upon return to their home country exemplify a failed psychological contract, which represents the non-contractual expectations between an employee and employer.
Step-by-step explanation:
The scenario described where an expatriate manager returns to their home country and finds that their expectations for reentry training and mentoring are unmet is an example of a failed psychological contract.
A psychological contract is an unwritten set of expectations between an employer and an employee regarding mutual obligations and benefits. It is not related to foreign investment, language competency or technical competency, but rather the expectations and agreements (implied or explicit) about the support and resources the returning manager anticipated receiving.