As strange as it sounds - if he went just up the road to Bydgoszcz, he could earn a decent living as an English teacher there. Not much competition, and plenty of people.
That's the problem though, isn't it. The most popular places are... well... already popular ;)
If he was, say, an Aussie, he would probably want to move to London for work. But he gets told that there's too much competition, so he would be better off moving to Bradford instead. Not much of a choice, is it? lol