The GF novel goes into much greater detail about how McCluskey's punch left Michael visibly disfigured in the face, his nose off center and cheekbone misshapen and with a constantly running nose that he had to continually wipe with a handkerchief.

In the movie, the black-eye and a few flashes of him dabbing his nose with a hanky are as far as it goes.

In both the book and the movie, of course, he later has this corrected by surgery.