Tim Howard was once a Metro, but he left MLS in 2003 for one of the most successful careers any American pro soccer player has ever enjoyed in England's Premier League. A starting 'keeper in England's top flight for more than a decade - mostly for Everton, briefly for Manchester United - Howard didn't win a lot of trophies, but he was a respected part of the fabric of the Premier League for a long time. And along the way he accumulated more than 100 caps for his country.
At 37, he's back in MLS, possibly feeling like he never left.