Virgil Van Dijk has had a huge impact on Liverpool's season and manager Jurgen Klopp feels the best is yet to come as the club's fight on two fronts continues.
Klopp was gushing in his praise of the Holland captain after he scored the pivotal second goal in a 3-1 win over Bayern Munich at the Allianz Arena to secure a Champions League quarter-final place.
Since the world's most expensive defender arrived at Anfield in January 2018 he has played a significant part in making the Reds' defence the toughest in the Premier League.
Van Dijk has made a total of 37 club appearances this season, keeping a remarkable 19 clean sheets in that time.
His statistics are even better when restricted to the Premier League with 17 shut-outs in 30 matches, which has allowed Klopp's side to take on Manchester City head-to-head as they trail the defending champions by just a point.
No wonder the manager could not hide his delight at the form of Van Dijk, whose other important contribution is to improve the players around him with Joel Matip - the club's fourth-choice centre-back - impressing since getting into the side after injuries to Joe Gomez and Dejan Lovren.
"What can I say? I could write a book about his skills, about his strength, how much I like him, what a fantastic person he is," said the Reds boss of his £75million man.
"So young, already so mature, so strong, all good. But Virg knows he can play better and that we can play better than we did (in Munich).
"It's a difficult place to come. Not a lot of teams have on their cards an away win at Munich. We have that night. Difficult, but cool."