Allen & Overy (A&O) has recruited a senior Warsaw partner from Dewey Ballantine. Jacek Michalski will return to the A&O fold, where he was a partner before leaving in 1998, in the new year. Dewey is currently fine-tuning its high-profile merger with West Coast leader Orrick Herrington & Sutcliffe, which will create a practice with almost 1,500 lawyers and revenues of nearly a $1bn (£535m).

Legalweek.com (5 December).