Saints have confirmed the appointments of new manager Mauricio Pochettino's backroom staff.
Jesús Pérez, who worked as a technical coach under Pochettino at Espanyol, is the assistant boss.
The 41-year-old started at the Spanish side as a first-team analyst in 2010, before working his way up.
Miguel D'Agostino, 41, takes over as a first-team coach, while former Spanish international Toni Jiménez, 42, is the goalkeeping coach.
Like Pérez, they also worked under Pochettino at Espanyol, with Jiménez having served as his number two at the Spanish club.
The trio will be assisted by technical support coach Fran Alonso.