Dublin born Murphy, 27 has been linked with a move to Bramall Lane during the January transfer window as a possible replacement for transfer listed Paddy Kenny.
The Irishman, whom has two Republic of Ireland caps (v Turkey and Canada in 2003) is out of contact at Glanford Park this summer and is allegedly a target by the Blades whom have Ian Bennett, Jamie Annerson and Justin Haber in reserve; "We have had no contact what so ever from Sheffield United and neither have they been in touch with Joe's agent. End of story" insisted the Iron boss.
"Again I am being asked to comment on an article that has appeared in a newspaper. Anyone can put anything in a newspaper or on a message board somewhere. It has been shown that of all these stories that appear, only about eight per cent are true."