Jamieson, Fausset and Brown on Genesis 41:33

33. Now therefore let Pharaoh look out a man--The explanation given, when the key to the dreams was supplied, appears to have been satisfactory to the king and his courtiers; and we may suppose that much and anxious conversation arose, in the course of which Joseph might have been asked whether he had anything further to say. No doubt the providence of God provided the opportunity of his suggesting what was necessary.