Allen & Overy and O’Melveny & Myers have held talks about a potential combination, according to two sources briefed on the matter.

If a merger deal is finalized between both firms, it would create a 3,000-lawyer global giant with roughly $2.8 billion in combined gross revenue. Details of the talks, to date, have been contained to only a small number of senior figures, although Allen & Overy partners were told in January that the Magic Circle firm was in talks with several U.S. firms about a potential combination.