I was checking out shit about the champions league games this week when i stumbled upon some interesting info.
It says that Diego Costa has played for both Brazil and Spain at national senior level. He was able to change as his games for Brazil were only friendly fixtures.
Yet Adama Traore cant play for Australia because he represented Ivory Coast at youth level.
But to make it more confusing, Rhys Williams represented Wales at U/21 level.
Does anyone know why there are so many different situatuions and why Williams can play for us and not Traore?