Bayer AG plans to meet banks this week as it works on a $57 billion bridge loan backing its proposed takeover of Monsanto Co. and create the world’s biggest supplier of seeds and pesticides.

The talks Tuesday will form part of the syndication of the loan agreed between lenders and the Leverkusen, Germany-based company, according to people familiar with the matter, who are not authorized to speak publicly and asked not to be identified.

The maker of health-care and agricultural products agreed to buy St Louis-based Monsanto for $66 billion in this year’s biggest deal and the largest foreign takeover ever by a German company. Bayer will fund the transaction with a combination of debt, the issuance of $19 billion of mandatory convertible bonds and a rights offer.

Officials at Bayer didn’t immediately comment on the meeting.

Bank of America Corp., Credit Suisse Group AG, Goldman Sachs Group Inc., HSBC Holdings Plc and JPMorgan Chase & Co. agreed to provide bridge financing. Bank of America, Credit Suisse and Rothschild & Co. advised Bayer on the takeover, while Morgan Stanley and Ducera Partners LLC acted for Monsanto.

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