Bangladesh, Sept. 13 -- The troubles of Chelsea Football Club and its former owner, Russian billionaire Roman Abramovich, have taken another dramatic turn. The English Football Association (FA) has charged the club with more than six dozen breaches of its regulations over improper financial conduct during Abramovichs tenure. The case, which touches on secret offshore payments, questionable player transfers, and international money-laundering probes, represents one of the most sweeping regulatory actions ever brought against an English football giant.

The allegations, centered on transactions between 2011 and 2016, cast new light on the financial practices that fueled Chelseas transformation into one of Europes most successful clubs under...