Utilize the input text as a context reference, choose the right relationship between John Cryan and Chief Executive Officer 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.

Below are some of the issues Credit Suisse Chief Executive Officer Tidjane Thiam, Deutsche Bank’s Co-CEO John Cryan and John McFarlane, the chairman and interim CEO at Barclays, must grapple with.

Answer: position_held