It is understood that Glenn, who is number two in this year's Marketing Power 100 list, rejected the US drink and snack giant's offer of a new international role. He leaves PepsiCo after 13 years.
Known for his outspoken views, the 45-year-old is credited with helping to propel the Walkers brand to being one of the biggest in the UK on the back of a highly successful Gary Lineker advertising campaign.
Pepsi is replacing one marketer in Glenn with another. Amin as senior vice-president of marketing for PepsiCo International is responsible for marketing all the grocery giant's brands outside of North America.
"I have enjoyed my time at Walkers and PepsiCo immensely and feel privileged to have worked with such talented teams over the years. I believe that PepsiCo UK has a great future. And while the decision to leave has been very difficult, I feel that now it is time to seek a new challenge," Glenn said.
Glenn is also credited by PepsiCo with efforts to address growing consumer interest in health and wellness, leading the acquisition of PJ Smoothies, boosting Pepsi's healthy juice portfolio.
Mike White, PepsiCo International chairman and CEO, said: "Salman Amin is extraordinarily well equipped to assume the reins of our businesses in the UK and Ireland. He's a very strategic thinker with extensive international experience developing markets for a range of consumer products. He also brings extensive first-hand knowledge of both our snack and beverage businesses."
Amin previously served as senior vice-president responsible for marketing international snacks. He joined PepsiCo in 1995 as vice-president of marketing for Pepsi-Cola International.
Prior to PepsiCo, Amin worked at Procter & Gamble across a range of international markets, including the US, Germany, Asia and the Middle East. He holds an MBA from the Kellogg School at Northwestern University in the US.
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