They've won four from four but don't think it'll be all quiet on the transfer front at Old Trafford.
United are very much open for business - with ins and outs predicted.
But where will Ole Gunnar Solskjaer look to improve things?
It's no big surprise that a centre-back is top of the wish list.
Wednesday's 2-0 win at Newcastle was the club's first clean sheet under the caretaker but he knows they need to be stronger at the back.
Here's some of the stories that have caught the eye....
Bookmakers slash Koulibaly odds
Manchester United are the bookies' favourites to land Napoli defender Kalidou Koulibaly.
His likely destination is Old Trafford the tipsters say - despite an asking price in excess of £100 million.
Paddy Power say a 'surge in betting' has seen his odds of moving shorten from 33/1 to 6/1.
Fosu-Mensah back at United
Timothy Fosu-Mensah will return to Manchester United.
Love Sport Radio claim Fulham had terminated the loan after a poor spell in west London.
Fosu-Mensah's departure could pave the way for Chelsea defender Gary Cahill to arrive.
Inter not hopeful on Young
Inter Milan aren't sure Ashley Young is keen to move to Italy.
The 33-year-old has been linked with a switch to the San Siro in the transfer window.
But reports in Italy suggest much work is still needed to convince Young to leave England.