The winger, who has been capped once by the U.S. national team, joins on a one-year contract.
The Philadelphia Union have announced the signing of Fabrice "Fafa" Picault from St. Pauli in the German second division.
The winger joins the Union as discovery signing on a one year deal, with club options for two additional years.
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Picault, 25, scored four goals and added three assists in his 22 appearances for St. Pauli in the Bundesliga 2. His emergence in Europe earned him a call to the U.