The Blades have today (Tuesday) bolstered defensive options further ahead of the new season.
Former Peterborough United defender Craig Alcock has agreed a two-year deal at Bramall Lane, joining the Blades on a free transfer having been released by The Posh at the end of last season.
The 26-year-old played 39 times for Peterborough, defeated in the semi-finals of the play-offs last term, and is comfortable at right-back or left-back in addition to being able to play at centre-half.
The Truro-born defender made over 100 outings for Yeovil Town prior to moving to London Road in July 2011 for a compensation fee of £100,000 owing to Alcock's age.
Alcock went on to notch up 112 appearances for Posh in all competitions during his three seasons at the Club, including winning the Johnstone's Paint Trophy in March 2014, and had the option to remain at London Road.
Blades boss Nigel Clough is pleased to have secured his eighth summer recruit and points to Alcock's versatility as a huge positive, remarking:
"We are delighted to get Craig, who has experience of the top end of this division and also the Championship in recent times.
"A major advantage is he can play anywhere across the back four and that will be hugely beneficially through what is a very, very long season."