Gav

Hi, I read a book a few years ago and want to read it again but I can’t remember the title or the author. It was about a drug smuggler and if I remember rightly the characters name was simply ‘Mister’. It was set in Bosnia or Serbia and I guess it was just after the war as I remember the end of the book and a chase through a field that wasn’t yet cleared of mines. Would appreciate any help as I’ve googled everything I can think of without any success