Utilize the input text as a context reference, choose the right relationship between 'Bouygues' and 'Martin Bouygues' from the options.
Options: director/manager, stock exchange, chief executive officer, chairperson

In June, Bouygues head Martin Bouygues rebuffed a 10 billion euro bid for Bouygues Telecom, France's third-largest mobile operator, by Altice (ATCE.AS), the holding company of tycoon Patrick Drahi.
director/manager