Danny Wilson is tipping Danny Higginbotham to be a vital part of the Blades squad in the second half of the season.
Higginbotham penned a deal until the end of the season on Tuesday and subsequently made his United debut at Doncaster hours later.
The arrival of the 34-year-old from Stoke City provides Wilson with some much needed defensive reinforcements following the news that Neill Collins will be sidelined for around two months with a triple fracture to his cheekbone.
On Higginbotham's performance at the Keepmoat and what the versatile defender can offer as the season progresses, the Blades boss said: "We brought Danny in at the 11th hour and he got better and better as the game went on, without him we could have been in trouble.
"Football changes everyday and without Neill (Collins) and Harry (Maguire) we needed some experience at the back and thankfully we nipped in and brought in Danny.
"He will serve us very well in the second half of the season I have no worries about him.
"For him to come here shows he wants to play football and to be honest Stoke City were fantastic is helping make the deal happen so quickly.
"Danny is big mates with Dave (Kitson) so he played a part in getting him to come to Bramall Lane because Danny is a Premiership defender really.
"We always wanted to sign a player with a wealth of experience because we have our own youngsters that we want to progress.
"We had to keep the deal quiet because we weren't sure we could get a player of Danny's calibre in at such short notice."