Ward, 32 was released by Championship outfit Norwich City this summer after. He had originally signed for the Norfolk club in August 2004 but had only made just four appearances to his name.
The shot stopper brings with him a wealth of experience; playing 505 (+ two as a substitute) competitive games whilst also reviving five international caps by Wales.
The Worskop born keeper joined the Blades on trial the other day. He had been training with Barnsley as they look to replace Scott Flinders whom has recently signed for Crystal Palace.
Ward sat on the bench as the Blades road out a convincing 3-0 win over Inverness Caledonian Thistle on their Scottish tour, no doubt Ward who like to face former club Nott's County if he is still at Bramall Lane on August 1.