Position/Team: Midfielder/Mainz (Germany)
Age/Hometown: 20/Dallas
National team caps: None
MLS experience: None
Complex says: The 20-year-old Jeffrey has yet to win a cap for the senior U.S. team, although he has attracted attention at both the Under-17 and Under-20 World Cups. After a spell at Club Brugge in Belgium, Jeffrey moved to Mainz in Germany in January 2010, and what a time to do so. After finishing 9th in the league last term, Mainz are amongst the pace-setters this season and Jeffrey has been earmarked for rapid development, with coach Thomas Tuchel highlighting his potential. Watch this space!