The duo are set to represent Ivory Coast and Cameroon respectively at the tournament, starting on Sunday, which made their availability a doubt for the 20:00 GMT kick-off.
Noussair Mazraoui has also been selected for the competition, by hosts Morocco, who play in the weekend's opening fixture. The defender isn't involved tonight, but it is a boost for Ruben Amorim to have two of his three imminently departing Reds at Old Trafford to face the Cherries.
Striker Benjamin Sesko, who has missed United's last four matches with an injury, is fit to return to the bench despite dealing with illness in the build-up to this one.