White & Case and Greenberg Traurig are among the firms scoring roles on the $4.9bn (£2.9bn) sale of the owner of online poker sites PokerStars and Full Tilt Poker to Amaya Gaming.

Montreal-based gaming group Amaya will take over Isle of Man-headquartered Rational Group, owned by Oldford Group, in an all-cash deal, creating the world’s largest publically traded online gaming company.