Question: The 2014-15 Southampton F.C. season was the club's first season with Dutch manager Ronald Koeman, who replaced what Argentine former footballer who is the current manager of Premier League Club Tottenham Hotspur?
Sentence (from "2014–15 Southampton F.C. season"): It was also the club's first season with Dutch manager Ronald Koeman, who replaced Mauricio Pochettino on 16 June 2014.
Relevant evidence: Yes