Refer to the input text as context and select the correct relationship between 'Bouygues' and 'Martin Bouygues' from the available options.
Options: director/manager, chairperson, chief executive officer, stock exchange

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