As a certain ex-manager once said, if you want guarantees buy a washing machine.Definitely. He's looked good but working in a pretty low pressure environment at the moment and coming to a team who'll want to win the league is a different type of job entirely.
No guarantee that he'll cut it.
I believe Rohl has the ability and temperament to be a really good coach. It's clearly early days in his coaching career, but he must be doing something right to get Klopp's attention.