Chris Wilder has arranged a training game later this week as he continues to prepare his squad for the 2020/21 Premier League campaign.
United will face Scottish Championship side Heart of Midlothian in a behind-closed-doors fixture on Friday ahead of returning south of the border at the weekend.
The Blades played 45 minutes against Dundee United on Tuesday but the game was abandoned at half-time due to heavy rain and a waterlogged pitch.
Boss Wilder commented: "We managed to get 45 minutes and even though we'd have liked 60 or so for those starting the game, that's better than nothing and you can always take something from whatever situation. We've worked hard to get a second game and we are looking forward to facing Hearts before returning home to continue our preparations next week."
Unfortunately, due to a Scottish FA ruling, the club will not be able to live stream Friday's match. However, highlights will be available on live.sufc.co.uk and YouTube after the match, as well as report here on sufc.co.uk