Virgil van Dijk after his move to Southampton. The centre-back joined from Celtic in 2015 in a £13million deal and quickly established himself as one of the Premier League's best defenders.
A £75million switch to Liverpool followed, with Van Dijk going on to become a key man as Jurgen Klopp's side won the Champions League and the league title.
But the man who took him to England admits there were some issues to iron out after the Dutchman's spell in Scotland. Koeman told UEFA's official website : "I think it was great to work with Virgil because he was an open guy in (terms of) communication. "He liked to learn from everybody.
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