Sheffield United have granted striker Gary Mulligan an extension to his loan spell with Port Vale.
The 20 year-old ended his deal last weekend but Blades boss Neil Warnock says he can stay for another month.
Vale boss Martin Foyle said: "I've spoken to Neil Warnock and he's been great for me.
"I'm looking forward to working with him for another month. He's enjoying league football and you can see him blossom."