Liverpool target has admitted he has his fingers crossed for Jurgen Klopp.
The German coach is set to take over at Liverpool by the end of the week.
And the centre-back has revealed all about what Klopp is like.
“There is no doubt about it, he is a fantastic coach, he’s absolutely great,” he said on the Daily Star website.
“You thought, ‘What is he going to do post-Dortmund?’, then clubs like Liverpool certainly came into the frame.
“He lives, eats, breathes and thinks football day after day.
“He will be a fantastic addition and I am certainly keeping my fingers crossed for the next step in his career.”