Danny Wilson is delighted to have signed Barry Robson and is tipping the Scotland international to make a lasting impact on the Blades.
Robson has started the last four matches and has impressed many onlookers, including his new boss.
Speaking of what Robson has achieved since arriving at Bramall Lane, following a spell with the Vancouver Whitecaps in the MLS, Wilson said: "Barry is a player I wish we could have brought in six months ago. If we could have got him in during pre-season he would have been fully fit and able to hit the ground running.
"Because he has played so little football of late, playing two games in the space of four days is a tough ask but he has given us everything and will continue to do so. He is a tremendous player and a real intelligent footballer, who generates a positive attitude from the players around him."
The manager has also been impressed with Leeds loanee Dominic Poleon, adding: "Dominic always wants to run at people and put defences on the back foot, but, like Barry, he hasn't played much recently and that gives us a real dilemma.
"You can't push players too hard too because if you do you could lose them for long periods. We have to continue to utilise the squad because all the lads run themselves into the ground for the cause."
Wilson has been without the services of Jamie Murphy and Jonathan Forte in recent weeks but both could return for Saturday's npower League One clash with MK Dons.