Maybe Rooney's drunk, snorting cocaine, right? (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

SOUSE (slang for drunk, as a noun = drunkard) containing (snorting = ingesting) C (slang abbreviation for cocaine), then R (abbreviation for right). Slang for someone from Merseyside, for example the footballer Wayne Rooney.