SCHEMA:
CREATE TABLE table_name_26 (date_of_appointment VARCHAR, manner_of_departure VARCHAR, outgoing_manager VARCHAR)
USER:
What is the date of appointment of outgoing manager fred rutten, who had a sacked manner of departure?

QUERY:
SELECT date_of_appointment FROM table_name_26 WHERE manner_of_departure = "sacked" AND outgoing_manager = "fred rutten"