Credit Suisse on Tuesday said it will appoint Prudential head Tidjane Thiam as chief executive, to replace Brady Dougan, who will step down at the end of June 2015.

Thiam, a former Ivory Coast government minister who has led Prudential since 2009, will become one of the few top insurance executives to transition into banking when he takes charge of Zurich-based Credit Suisse, a global lender reeling from US penalties and under increasing regulatory scrutiny.

Despite failing to overcome a shareholder rebellion when attempting to take over Asia-focused insurer AIA in 2010, French-speaking Thiam has brought value to investors by focusing on Asia as a key driver of profit.

"Tidjane will have a broader view," said Sally Yim, vice president at Moody's Investors Service.

"Credit Suisse has had different issues throughout the years and someone with a diverse background could look at its strategy with a fresh pair of eyes."

Dougan is one of only three global bank CEOs still in his job following the global financial crisis, alongside JP Morgan's Jamie Dimon and Lloyd Blankfein at Goldman Sachs.

But he has faced pressure to quit since last year when Credit Suisse reached a $2.5 billion settlement with US authorities for helping Americans evade taxes via secret bank accounts.

Although the Swiss bank's board backed the American chief executive over the deal, under which Credit Suisse pleaded guilty to criminal charges but held onto its New York licence and its legally protected client data, he was criticised by some politicians and media in Switzerland.

LEGACY

Dougan, an Illinois native who has been at Credit Suisse for a quarter of a century and became CEO in 2007, has also been criticised for sticking with an investment banking strategy.

Cross-town Zurich rival UBS made a high-profile withdrawal from the business, regarded by many in Switzerland as too risky following the financial crisis.

Recent troubles aside, Dougan generally has been a well-regarded outsider in the Swiss banking community.

He won plaudits from investors for steering Switzerland's second-largest bank through the post-Lehman Brothers turmoil, cutting riskier trading activities and avoiding getting entangled in US subprime mortgages to the same degree as UBS, which took a state bailout in 2008.

One of the best-paid bankers in the world with an annual salary topping 90 million Swiss francs ($91 million) five years ago, he recently saw a pay cut as part of cost-cutting measures taken by the bank to tackle the surge in the Swiss franc.