Freddy Adu was billed as the next one-word sports superstar like Tiger, LeBron, Shaq.

He never lived up to the potential.

Once American soccer's savior, Adu bounced around European teams that left him forgotten by the public in the United States and an afterthought for a roster spot on the U.S. national team.

Only 22, though, Adu has returned to MLS and the Philadelphia Union, still dreaming of a career stuffed with national team glory and Premier League uniforms.

He's back in the United States a mature and humbled young man. Adu has reunited with his former D.C. United coach, Peter Nowak, with the hope of salvaging his pro career and proving that, yes, he can still blossom into the superstar so many experts and fans pegged him to become