Crystal Palace defender Paddy McCarthy has completed the formalities to extend his loan at Bramall Lane until the end of 2014.
The experienced centre-half will remain a Blade up to and including the home fixture with Scunthorpe United on Sunday 28th December, although McCarthy won't be eligible for selection in the FA Cup.
The 31-year-old started five games for United having joined at the beginning of October on an initial one-month deal, making his debut at Chesterfield.
Boss Nigel Clough expressed his desire over recent weeks to extend McCarthy's stay if possible and he has offered his thanks to Eagles boss Neil Warnock for helping make the extension become a reality.
The Gaffer said: "We are obviously delighted that Paddy has agreed to come back until we conclude our 2014 league schedule.
"He has a young family based in South London, but Paddy loves playing football and has visibly enjoyed his time with us. We are grateful to Crystal Palace for sanctioning the extension and to Neil Warnock for helping make the move possible again.
"Palace plan to use him in the third round of the FA Cup, but for us to know he is available for all league games until the end of the year is fantastic."