With first choice Richard Wright out injured and young replacement Steve Sigmonsen conceding three in Saturday's Merseyside derby, the likelihood of Gerrard been recalled to Goodison seemed great. This would have left United with only youngster Kristian Rogers available between the sticks.
However, the crisis seems to have passed after the Toffeemen today secured ex-England international Martyn for a nominal fee.
Meanwhile, Blades manager Neil Warnock has been full of praise for the 30-year-old loanee.
"I'm amazed I've been able to get him. Paul is a top-quality keeper who I've admired for a long time".
"Everton were great about it because David Moyes, their manager, was worried it might leave him short of cover".