CREATE TABLE table_21561 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

Who left a position on 24 January?
SELECT "Outgoing manager" FROM table_21561 WHERE "Date of vacancy" = '24 January'
SELECT "Outgoing manager" FROM "table_21561" WHERE "Date of vacancy" = '24 January'