And the Uruguayan centre-toward almost scored with his very first touch for the club.
Cavani became the second United debutant in a matter of days after Alex Telles introduced himself to our fans with a solid performance against Paris Saint-Germain in the French capital.
Of course, 20 is the number Ole was famous for wearing during his playing days at Old Trafford so, from first to last, here is every player who has appeared for United for the first time under the boss...
2018/19: CHONG, GARNER, GREENWOOD
Solskjaer took over at Old Trafford, initially on a caretaker basis, in December 2018 and it did not take the Norwegian long to introduce Academy players to the first-team squad.