Table:
text: 2011–12 Segunda División
Managerial changes
Managerial changes
Team Outgoing_manager Manner_of_departure Date_of_vacancy Replaced_by Date_of_appointment Position_in_table
Cartagena Paco López Sacked 19 September 2011 Javi López 20 September 2011 22nd
Huesca Ángel Royo Sacked 3 October 2011 Quique Hernández 3 October 2011 20th
Gimnàstic Juan Carlos Oliva Sacked 30 October 2011 Jorge D`Alessandro 31 October 2011 22nd
Xerez Juan Merino Sacked 4 December 2011 Vicente Moreno 4 December 2011 16th
Villarreal B José Francisco Molina Mutual consent 22 December 2011 Julio Velázquez 22 December 2011 18th
Cartagena Javi López Sacked 23 December 2011 Carlos Ríos 23 December 2011 22nd
Girona Raül Agné Sacked 15 January 2012 Josu Uribe 15 January 2012 21st
Recreativo Álvaro Cervera Mutual consent 9 March 2012 Juan Manuel Rodríguez 9 March 2012 11th

Question: Under the Segunda División 2011–12, list the total number of managers who have left Villarreal b. ?