MADRID (AP) -- Major League Soccer player Freddy Adu will train with Rayo Vallecano and may join the Spanish club.
Rayo sporting director Felipe Minambres says Adu will train with Rayo for 12 days starting on Friday.
Adu, who has played for the Philadelphia Union and U.S. national team, confirmed his trip to Spain on his Twitter account.
The 22-year-old Adu played for the Union last season but was among the players left unprotected last month in the MLS expansion draft for the Montreal Impact.
Adu previously played for European clubs Benfica, Monaco, Aris and Cauykur Rizespor of Turkey.
He won't be the first American player to sign with Rayo. Former U.S. goalkeeper Kasey Keller previously played for the topflight club.