McNulty joined the Bantams on a season long loan deal in the summer transfer window, and had featured 16 times this season.
The deal during the summer included a recall clause for the Blades and Chris Wilder has taken up this option, following an injury to striker Leon Clarke.
It is believed Wilder wanted to bolster his attacking line up as the Blades look to extend their lead at the top of League One.
Despite McNulty only scoring once during his loan spell at Valley Parade the Blades boss obviously feels Billy Sharp, who has scored 17 league goals this season, 12 more than any other player, needs more help- and McNulty could be the man to do that.
Bantam’s boss Stuart McCall did admit the South Yorkshire side had been in touch with him regarding McNulty’s loan deal. He told the Telegraph and Argus: “Chris kept me in the loop all last week and they want to have five strikers.”
This sudden departure could see Bradford dip into the transfer market in the coming weeks.
Bradford fans… Who would you like to see replace McNulty during the January transfer window? Let us know your thoughts and opinions in the comments below!