Utilize the input text as a context reference, choose the right relationship between Eurogroup and Jean-Claude Juncker from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

He is due to hold a teleconference on Monday morning with European Commission head Jean-Claude Juncker and European Union president Donald Tusk and the head of the Eurogroup of eurozone finance ministers.

Answer: chairperson