Danny Wilson is wary of the challenge his players will face at Glanford Park on Saturday.
The Blades face pointless Scunthorpe, who currently sit bottom of the League One table after four matches, having scored just one league goal this term, but the Blades boss says his team head to Lincolnshire expecting a tough afternoon's work and insists if they take anything for granted they could come unstuck.
On the weekend's clash, Wilson praised the Iron and their Sheffield-based manager: "It is a dangerous proposition. Scunthorpe have lost all their games and haven't scored many goals in the league.
"They haven't won a point yet and I know Alan (Knill) and several of their players very well - they are a more than capable on their day.
"Our four or five reports on them have been very good until they have conceded; they have been outstanding at times and should have been well in front when they have lost some sloppy goals.
"We go to Glanford Park knowing they will be under pressure because of their position and hopefully we can take full advantage but it will be far from easy, that is for sure.
"We got a draw at their place last season but I am told it is a number of years since we last won there and it is a local derby in terms of mileage so that adds extra spice.
"I don't believe we have anything to fear in League One, but if we aren't at the races and don't earn the right to play we will struggle, regardless of the opposition."