Wolves have signed Reading goalkeeper Graham Stack on a month's loan.
Stack, 25, joined Reading from Arsenal in December 2005, but has started just one league game for them and was on loan at Leeds for most of last season.
"Graham's an experienced keeper who I had no hesitation in taking. He'll be on the bench on Saturday," McCarthy told his club's website.
"He lost his slot at Reading through injury, but he doesn't want to just sit there and pick up his money, he's going to come here and compete for a place."
