Shaun Miller says the Blades will face a tough test at Crawley Town's Broadfield Stadium on Saturday.
Miller faced the Red Devils when playing for Crewe in League Two last season and he isn't surprised to see them doing well this term following promotion.
The striker said: "It will be another tough test at the weekend because Crawley are just outside the top six and they always do well at home.
"It is another long trip but we go there in confident mood and it would be nice to start the festive period with three points.
"Crawley have scored a lot at home this season, but also conceded a fair few so it promises to be an exciting fixture.
"We then look forward to back-to-back home games and the Christmas period is an ideal chance to rack up some points quickly."