Port Vale have given Sheffield United permission to speak to Micky Adams about the managerial vacancy at Bramall Lane.
The Blades are seeking a replacement for former boss Gary Speed, who left to take over the Wales national team, and Vale are flying high in second place in League Two.
Vale chairman Bill Bratt told the club's official website, www.port-vale.co.uk: "We have received an approach and we have reluctantly allowed Micky to speak to them."
He added: "Micky is a terrific manager who has been up front and honest with us throughout the process.
"It's testament to how well he has done at Port Vale that we have now been approached. Micky was offered a new contract before this happened and that is still on the table.
"We obviously want him to stay with Port Vale and I know everyone connected with the club feels the same."
Doncaster boss Sean O'Driscoll played down suggestions on Thursday that he had accepted the Bramall Lane post, while United said they would not appoint a new manager until the New Year.
First-team coach John Carver has been placed in caretaker charge as the Blades, currently 20th in the npower Championship, prepare for a home game with Hull on Boxing Day.
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