VIDEO: Watch Ryan Flynn score two crackers for Sheffield United under 21s
The Scottish midfielder has missed much of this campaign through injury but made a return as a substitute in the win over Coventry at Bramall Lane last week.
And that has been followed up with a two goal haul and a crucial 90 minutes against City, also at the Lane.
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Hide AdFlynn told sufc.co.uk: "Obviously I haven't played 90 minutes recently so it was good to get some minutes under my belt and it was a good performance from the boys."
United play Wigan Athletic at the DW Stadium on Boxing day before taking on Bradford at home the following Monday.