Think Donovan....
Starts at Leverkusen, gets loaned home for 2 years, does well. When Bayer call him back, he sucks, but it's a much more difficult league. He chokes, gets down on himself, and quits, calls it "homesick."
When he gets back in the US, he says, "I was homesick and wanted to play in a better league."
The problem is, we know that's a joke, he's a pussy and didn't like going from the best player on the team to the worst. The American media took it as: "We're better than Europe (Except for England.)"