Last time out, Peterborough suffered a 1-0 defeat at home to recently-relegated West Bromwich Albion, and they'll be looking to bounce back with a win over Slavisa Jokanovic's struggling side.
The two sides haven't faced each other since 2017, where their last meeting saw the Blades score late on to secure a 1-0 win over the Posh.
Meanwhile, Peterborough boss Darren Ferguson has been discussing the wealth of midfield options at his disposal, and said: “It’s a great problem to have so many good players for central midfield. We now have great options and flexibility in that area.
“Jack brings different qualities to the other three. I didn’t intend to use him for so long against West Brom, but circumstances forced me to and he came through unscathed.
“We had to be patient with Conor and at one stage we started looking elsewhere because we didn’t think he was coming, but I’m delighted he’s finally with us."
He continued: “Last season we had eight or nine players who were always certain to be picked, but that’s not the case now. Good players will be left out for tactical reasons or for loss of form.
“But I could play all four midfielders in a diamond or in a flat four. They are definitely options.”
Take a look at the latest news round-up from the Championship, as the build-up to the post-international break action continues:
1. Saints eye Baggie stopper
Southampton are the latest side to be linked with West Brom goalkeeper Sam Johnstone, as they look to find competition for starting stopper Alex McCarthy. He earned his second cap for England in their 4-0 win over Andorra last night, and was pursued by West Ham last summer. (The Athletic) Photo: Laurence Griffiths
2. Tangerines could return for Fuchs
Blackpool have been tipped to move again for Dundee United midfielder Jeando Fuchs in January, after failing to get a deal over the line last month. The ex-Alaves and Sochaux has two caps at senior level for Cameroon. (Football League World) Photo: Ian MacNicol
3. QPR want big money for Dieng
QPR are rumoured to have slapped a hefty £12m price tag on their goalkeeper Seny Dieng, after managing to hang onto him in the last transfer window. Sheffield United were said to be keen on him, before landing Sweden international Robin Olsen instead. (Football League World) Photo: Jacques Feeney
4. Scottish side missed out on Eaves
Hull City striker Tom Eaves was said to be of great interest to an unnamed Scottish side on deadline day, but a lack of funds saw a deal fail to materialise. He's now into his third season with the Tigers, after joining from Gillingham in 2019. (Alan Nixon - Twitter) Photo: George Wood