CREATE TABLE table_49708 ("Exit Date" TEXT, "Pos." TEXT, "Player" TEXT, "To club" TEXT, "Transfer fee" TEXT)

What was the date that a player went to the club Doncaster Rovers?
SELECT "Exit Date" FROM table_49708 WHERE "To club" = 'doncaster rovers'
SELECT "Exit Date" FROM "table_49708" WHERE "To club" = 'doncaster rovers'