European beer maker InBev NV, which owns the Becks and Stella Artois brands, is preparing a $46 billion buyout offer for American rival Anheuser-Busch Cos., the owner of the Budweiser brand, according to a report.

InBev, will approach Anheurser's chief executive Augutst Busch IV, but the company is expecting a cool reception, according to the Financial Times' Alphaville blog which cited anonymous executives and bankers.

InBev will send a follow up letter to the board of Anheuser-Busch outlining plans to offer $65 per share for the company, the report stated. If Anheuser refuses the offer, InBev is considering appealing directly to the shareholders of the company.

Anheuser shares rose $3.49, or 6.64 percent to $56.07 after the report.

Alphaville says that while preparations have been made InBev was not about to push the button.

Banks JPMorgan and Santander have arranged a provisional financing package of $50 billion for the deal, the report states.

A stock sale would follow 12 months after the takeover to raise between $10 billion and $17 billion to pay down a bridge financing facility

Shares of Anheuser-Busch rose $3.41, or 6.5 percent to $56.02 in morning trading on the New York Stock Exchange.