David Weir has revealed there could be movement in and out of Bramall Lane on the player front in the near future.
Speaking ahead of the Blades trip to managerless Carlisle United on Saturday, Weir said: "We are continually looking to improve the squad, but I would be a fool to just go out and sign players for the sake of it.
"We are looking to improve and add options to the squad, but it would be unprofessional and disrespectful to everyone connected to the issue if I publicly state my intentions in terms of signing players for specific positions.
"When we complete our business we will inform everyone and it will then become apparent where we feel we need to improve.
"At the moment we are working hard behind the scenes to make things happen and obviously the recent positive news of investment into the football club gives us a sounder financial footing to work from.
"But I am not kidding myself that suddenly we are overflowing with cash, I don't think for a minute that throwing money about is the way to become successful.
"We must continue to work hard with what we already have within the squad and if an opportunity arises to sign someone we would like, then hopefully we will be able to do our business professionally.
Of possible imminent movement, Weir added: "We have had interest in some of our players and it would make sense that we manage our squad and let people move on if new players do arrive.
"As I have always said, my sole focus at the moment is putting together a team that we believe can be sustainable and ultimately successful."