Christian Pulisic can go onto play for Bayern Munich, Barcelona or Real Madrid if he maintains his current level at Chelsea, says United States boss Gregg Berhalter.
Pulisic has enjoyed a meteoric rise since graduating to Borussia Dortmund's senior squad as a teenager back in 2016.
The talented winger quickly established himself as a regular in BVB's starting XI, helping them fight for the Bundesliga title and success in the Champions League.
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He impressed enough to attract admiring glances from Chelsea, who forked out £58 million ($77m) to bring him to Stamford Bridge in 2019.