The former Tottenham man was named man-of-the match for a persistent display on the right flank and was happy to begin his City career on a winning note.
And City started the campaign with a comprehensive 2-0 win over newly promoted Brighton, with only Mendy not featuring of the new boys - Sergio Aguero and a Lewis Dunk own goal sealing all three points.
"I am old enough to remember the last (and only) time we were in the old First Division, from 1979 to 1983".
"We knew what their game plan was going to be - to sit back and defend", he added. It was always going to be hard for us to score. We were stable. We controlled the game and the game was in our hands. But we have to improve.
Brazilian Jesus had a second effort ruled out for offside and Sergio Aguero, under pressure from Brighton's defence, blasted a shot wide as City dominated possession.
Brighton was successfully repelling City's potent strike force until a costly lapse. But then we won at Nottingham Forest (who were then European champions), gained some confidence, put some runs together, and finished well clear of the relegation zone.
"But he's also very humble about himself, he's also still learning the country and Premier League, and hence that's why he's brought in the level of players he has". That is what I'm proud of the most. They're fliers, who will charge up and down the flanks, overlapping, which suggests that the experiments with using fullbacks to tuck in as de facto wing-halves in an approximation of an old-fashioned W-M, discontinued towards the end of last season, may have been abandoned for good. Today our box was ideal and in the opponents box we scored two goals but we created more.
More immediately, there must be concerns about the way United was outplayed in the Super Cup by Real Madrid, despite in theory being far further along in preparation for the new season.