John Brooks is set to leave Hertha Berlin and join Wolfsburg for around €17 million ($18.9m) -- the highest fee ever paid for a United States international -- according to reports in Germany.
Defender Brooks, 24, came through the ranks at Hertha and has made 90 Bundesliga appearances for the club.
However, despite being under contract until 2019 the Berlin-born centre-back is set to move to Wolfsburg, Bild and Sky reported.
After securing another year of top-flight football in the relegation-promotion playoff with Eintracht Braunschweig, Wolfsburg are looking to add stability to their defence.