A legal recruiting firm that claims it played a key role in the move by Cleary Gottlieb Steen & Hamilton partner Ethan Klingsberg to Freshfields Bruckhaus Deringer last month sued the law firm in federal court on Tuesday, saying it put Klingsberg on the firm’s radar and hasn’t been paid.

Boston Executive Search Associates wrote in its complaint that it was contacted in July 2018 by Mitchell Presser, the U.S. head of global transactions at Freshfields, and worked for more than a year to try to build up the Magic Circle firm’s corporate team in the U.S. The recruiting firm said it discussed Freshfields with more than 300 candidates and put 35 of them on Freshfields’ radar, resulting in seven meetings.