Here's what he really means: "I would love to end up in England some day playing for Manchester United... [but Chelsea have offered me 4 times as much money, so I think I'll sign there]."
http://money.cnn.com/2003/11/20/commentary/column_sportsbiz/sportsbiz/index.htm British... so, Celtic and Rangers are joining after all? Actually I kind of doubt Adu made that mistake. He was likely misquoted. Later in the article, the writer himself refers to Birmingham City as a "British" club. Another case of "UK=Britain=England".