CREATE TABLE table_27374004_4 (outgoing_manager VARCHAR(255), manner_of_departure VARCHAR(255), position_in_table VARCHAR(255))
Who was the outgoing manager of the team in 15th position that was sacked?
    
SQL: SELECT outgoing_manager FROM table_27374004_4 WHERE manner_of_departure = "Sacked" AND position_in_table = "15th"