Will Cano satisfy Mariners?

Robinson Cano is now officially the member of Seattle Mariners, after finishing his 9-year career as a second baseman at New York Yankees since 2005. But since it's the second biggest FA deal in history following the $275 million-for-10-years deal of A. Rod., the Mariners' decision remains controversial. The attached link is the article of why it is expected that the Mariners will regret. What do you think?