Table:
text: 2007–08 Premier League
Teams
Managerial changes
Team Outgoing_manager Manner_of_departure Date_of_vacancy Replaced_by Date_of_appointment Position_in_table_
Manchester City Stuart Pearce Contract terminated 14 May 2007 Sven-Göran Eriksson 6 July 2007 Pre-season
Chelsea José Mourinho Mutual consent 20 September 2007 Avram Grant 20 September 2007 5th
Bolton Wanderers Sammy Lee Mutual consent 17 October 2007 Gary Megson 25 October 2007 19th
Tottenham Hotspur Martin Jol Contract terminated 25 October 2007 Juande Ramos 27 October 2007 18th
Wigan Athletic Chris Hutchings Contract terminated 5 November 2007 Steve Bruce 26 November 2007 18th
Birmingham City Steve Bruce Wigan purchased rights for £3m 19 November 2007 Alex McLeish 28 November 2007 15th

text: 2007–08 Premier League
Teams
Managerial changes
Team Outgoing_manager Manner_of_departure Date_of_vacancy Replaced_by Date_of_appointment Position_in_table_
Derby County Billy Davies Mutual consent 26 November 2007 Paul Jewell 28 November 2007 20th
Fulham Lawrie Sanchez Contract terminated 21 December 2007 Roy Hodgson 30 December 2007 18th
Newcastle United Sam Allardyce Mutual consent 9 January 2008 Kevin Keegan 16 January 2008 11th
Chelsea Avram Grant Contract terminated 24 May 2008 Luiz Felipe Scolari 1 July 2008 Post-season (2nd)
Manchester City Sven-Göran Eriksson Mutual consent 2 June 2008 Mark Hughes 4 June 2008 Post-season (9th)
Blackburn Rovers Mark Hughes Manchester City purchased rights for £4.6m 4 June 2008 Paul Ince 22 June 2008 Post-season (7th)

Question: How many teams had to leave due to contract terminations in the 2007/08 Premier League?