Brain, mind, blood and guts
What's the name of a movement of highly educated people from their own country to another one in order to get better paid job
the brain drain
Complete the sentence: He's got football ____ the brain.
He's got football on the brain.
Transform the following sentence: I need to ask you for some advice: what can you tell me about trade unions?
I need to pick your brains: what can you tell me about trade unions?