Chris Wilder has added a pacey goalscorer to his squad, with the capture of Richairo Živković.
On transfer deadline day, the former Dutch U21s marksman arrives at S2 on a loan deal until the end of the season from Chinese club Changchun Yatai, although the Blades have an option to make the deal permanent in the summer.
Boss Wilder commented: "People will recognise we do sometimes go left field with our signings, but we've worked very hard on this one, because we have had to.
"We know enough about him, we've kept tabs on Richairo for a while and tracked his progress. He is a Dutch international at ages under the senior level, he'll be unpredictable to other teams, but we know what we're getting and he wants to make the most of the opportunity.
"He will give us genuine pace at the top of the pitch. We're learning all the time this season, but pace in the Premier League is key and Richairo is someone we think can kick us on.
"Hopefully things go well enough to turn it into a permanent move in the summer - this is another signing of a young player with an eye on the future."
Živković, 23, joined FC Groningen at the age of 11 and having progressed through the ranks, he penned a three-year contract with the club in 2012 and subsequently became the club's youngest ever debutant.
In Holland's top-flight Živković netted 10 goals in 33 appearances, prompting Ajax to swoop for his services in March 2014, following in the footsteps of Luis Suarez who had previously transferred from Groningen to the biggest name in Dutch football.
He netted once in seven senior appearances in Amsterdam, but impressively scored 27 times in 40 outings for the club's reserve team, in addition to loan spells with Willem II and FC Utrecht.
In June 2017, Živković moved to the Belgian Pro League penning a long-term deal with KV Oostende and then made the switch to China, where he has since scored 12 goals in 17 matches.