Freeman spent the last two months of last season on loan at United and impressed during his time at Bramall Lane.

The Wales Under 21 international made 12 appearances during his time at United and they would like to bring him back to South Yorkshire.

Blades boss Nigel Clough is a big admirer of Freeman having signed the full-back during his time in charge of Derby.

A number of other clubs are thought to be monitoring Freeman's situation at Derby, but United are thought to be leading the race for his signature.