CREATE TABLE table_45754 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

What is Outgoing Manager, when Date of Vacancy is '25 September 2008'?
SELECT "Outgoing manager" FROM table_45754 WHERE "Date of vacancy" = '25 september 2008'
SELECT "Outgoing manager" FROM "table_45754" WHERE "Date of vacancy" = '25 september 2008'