The former Liverpool midfielder, a 2005 Champions League winner with the club, enjoyed a glittering career that – in terms of medals collected – only an elite few can rival.
So when Alonso, who also played for Real Sociedad, Real Madrid and Bayern Munich, hung up his boots in 2017 he did so satisfied with the work done and success achieved.
But watching Klopp inspire and guide the current Reds team does make Alonso regret there was not a chance for their paths to cross as manager and player.
“I have played so many times against him, I would have loved to have been coached by him,” he told Nico Rosberg’s Beyond Victory series.