Swann left Kellogg on Friday after ten years at the company, following an earlier position as regional media director for Central & Eastern Europe at Ogilvy & Mather.
A spokesman for Kellogg said the company was still deciding whether to replace Swann directly.
On an interim Swann's responsibilities are being handled by European marketing director Greg Economos, whom he reported to.
Accenture could not be reached to comment on Swann's recruitment.
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