The defender was sent-off twice last season, once at Bramall lane after only 10 minutes in a 3-0 defeat (and a James Beattie hat-trick). he joined the Foxes on a free transfer in April 2007 and has gone onto make 126 (+4) appearances with the Walkers Stadium club and score 12 goals.
Kisnorbo, 27 is an Australian international (5 caps) but is also believed to be wanted by former club Hearts. It is believed that the Blades could obtain the former South Melbourne defender in the region of £500,000.