Having finished second in their group, the 'Red Devils' were always likely to be pitted against one of the tougher teams, but it will not get much more difficult than a trip to the Parc des Princes.
Nonetheless, Mourinho's outfit - despite their struggles in the Premier League - will always be one of the teams that the big guns are looking to avoid.
PSG, fuelled by Qatari money, can boast one of the most expensively assembled squads in the history of football. The front three of Neymar, Edinson Cavani and Kylian Mbappe would strike fear into any defence, and the 20-time English champions have their work cut out.
PSG have never won the Champions League, and it is the burning ambition of their owners to do so, having been knocked out at the last-16 stage in the previous three seasons. Man United on their part have won the trophy three times, the last coming ten years ago, but they look a shadow of those famous teams right now.