CREATE TABLE table_29173 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Incoming manager" TEXT, "Date of appointment" TEXT)

What was the manner of departure when the outgoing manager was andrea mandorlini?
SELECT "Manner of departure" FROM table_29173 WHERE "Outgoing manager" = 'Andrea Mandorlini'
SELECT "Manner of departure" FROM "table_29173" WHERE "Outgoing manager" = 'Andrea Mandorlini'