Both clubs were afforded delayed starts to the 2020/21 top-flight season owing to their respective European exploits last term - with United reaching the Europa League semi-finals against Sevilla in Germany and City stopped by Lyon in the Champions League last eight in Lisbon.
Those continental campaigns were ended a day apart in mid-August, with precious little time to prepare for the beginning of the new Premier League season in the second week of September.
United and City were originally due to open against Burnley and Aston Villa respectively, but both clubs were afforded extra time off and did not begin their individual seasons until September 19 and September 21, with United losing 3-1 at home to Crystal Palace and City winning at Wolves by the same scoreline.
A hectic fixture list owing to the effects of the ongoing coronavirus pandemic has left few opportunities to find windows for rescheduled matches, but new dates for those aforementioned contests were confirmed on Thursday.
— Premier League (@premierleague) December 31, 2020
Relegation battlers Burnley vs Manchester United - who currently sit second and just three points off top spot with a game in hand after a last-gasp win over Wolves on Tuesday - will now take place at 8:15pm GMT on Tuesday, January 12, live on Sky Sports.
Meanwhile, Manchester City vs in-form Aston Villa is scheduled to be played eight days later at 8:15pm on Wednesday, January 20, live on BT Sport.
For United, that short trip to Turf Moor is sandwiched between an FA Cup third-round tie at home to Championship promotion hopefuls Watford on January 9 and a high-profile showdown with rivals and leaders Liverpool at Anfield on January 17.
City - currently eighth and three points adrift of the top four - host Crystal Palace on January 17 before a midweek trip to struggling West Brom on January 26.
The two Manchester rivals are due to face off in a one-legged Carabao Cup semi-final tie at Old Trafford on January 6.
Other fixtures awaiting new dates are Aston Villa vs Newcastle, Everton vs Manchester City and Tottenham vs Fulham - all of which were called off due to Covid-19.
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