Buying him made sense at the time. He was pulling up trees in Germany and all the evidence was that he'd be a good signing. Didn't quite work out, partly due to injuries, but perfectly understandable that we signed him. The only really baffling signing of the Klopp era is Ox. £40m if memory serves? For a player with his injury record at the time? Naby was a different kettle of fish, just a bit unlucky from our point of view.