Anheuser-Busch, which has agreed to buy rival brewer SABMiller, plans to contact potential bidders for SABMiller's Grolsch and Peroni beers and wrap up deals in less than three months, sources close to the process said. 

The sales could together be worth up to €1.8 billion. Peroni and Grolsch are small, premium brands.

They are aimed at heading off competition regulators' concerns about AB InBev's $100 billion-plus takeover of SABMIller, one of the biggest deals in corporate history. 

Sources said AB InBev was keen to avoid getting bogged down in any regulatory scrutiny over a European portfolio that already includes its premium brands Corona and Stella Artois. 

Peroni and Grolsch together generate earnings before interest, taxes, depreciation and amortisation (EBITDA) of €120-150m, and could be valued at a multiple of around 12 times their EBITDA, the sources said. 

Indicative offers will be due in mid-January, with a tight schedule for due diligence aimed at clinching a deal by early March, the sources said.

The deadline favours private equity firms over trade buyers and shows AB InBev is valuing time over money, sources said. 

Because financial buyers do not have to assess a deal's impact on their current operations, they can pull the trigger more quickly, but will not bid as much since they lack synergies. 

Belgium-based AB InBev faces paying SABMiller a $3 billion break-up fee if its takeover plan fails.

US buyout funds KKR, Bain Capital and TPG have already expressed interest in the brands being sold by AB InBev, which also include craft beer maker Meantime Brewing. 

So have European peers PAI Partners, BC Partners, Cinven and Permira, the sources said. 

KKR and AB InBev have a history of profitable dealing. KKR bought Korea's Oriental Brewery in 2009 for $1.8 billion in the wake of InBev's purchase of Anheuser-Busch. AB InBev bought the business back in 2014 for $5.8 billion. 

When it comes to brewers, Heineken would face competition hurdles and Carlsberg lacks the firepower for a big deal, sources said, though one said meetings between the brewers and financial investors pointed to the possibility of a joint bid that would break up the assets. 

Japan's Asahi Group Holdings is one of the few industry buyers that would not face competition scrutiny, the sources said, and pointed to Spain's Mahou-San Miguel Group as another possible suitor. 

Peroni, founded in Vigevano, Italy, in 1846 has been part of SABMiller since 2003. It is mostly sold in Britain and Italy. Grolsch, known for its flip-top bottle cap, is largely sold in the Netherlands.