The 19-year-old forward, who made his professional debut in the Carabao Cup quarter-final against Leicester in December, has committed his future to the Club for a further three years.
Born in Hamburg, but raised in Wythenshawe, the boyhood Blue was snapped up by the Academy as a nine-year-old.
The striker has put his strength, pace and accuracy in both feet to good use in the U18s and EDS, for whom he has found the back of the net with regularity and is delighted the next stage of his professional development will continue at the City Football Academy.
“I’ve loved the Club since I moved over here from Germany and have been here for many years, so I really feel part of it,” he said.
“It’s a privilege to get this contract and I’m really happy to have signed.
“I’ve been here since U10s and I feel like the Club have really put their trust in me so I just want to go out and show what I can do.”
One of several youngsters who’ve graduated to Pep Guardiola’s first team squad, Nmecha has joined Phil Foden and Tom Dele-Bashiru in making his debut this season.
Introduced for the final two minutes against Leicester, the teenager was thrust into the pressurised environment of extra-time and was coolness personified to convert a penalty in the shoot-out.
The high-tempo nature of an all Premier League tie took some getting used to, he admits, but he approached the game with a maturity beyond his years.
“When you first come on for your debut your legs feel heavy but as soon as you get going you loosen up and relax,” explained the EDS captain.
“It was a lot faster and I don’t normally play right wing so I had to get used to it. I could have done a bit better, but once I get a more games at that level I’ll be fine.
“As soon as the manager asked I put my hand up to take a penalty. I take them all the time for my team so it wasn’t a big deal and I was confident I’d score.”
That confidence in his ability is also held by some of his more experienced team-mates and Nmecha reveals that Vincent Kompany has been particularly willing to offer the benefit of his experience.
“Kompany roughs me up in training but he’s really given me a lot of confidence because he’s played against the best strikers in the world and he’s telling me I can make it.
“I’ll probably have to go out on loan and show what I can do. I just need to learn and get more experience but I think once I start playing first team football regularly then I’ll start to improve naturally.”
Nmecha admits he’s been buoyed by Guardiola’s willingness to integrate Academy prospects into the first team set-up, noting that the development of the long-term team-mates Foden and Dele-Bashiru has served only as motivation.
And he’s hoping this latest career milestone will also serve as encouragement for Felix, the second Nmecha on City’s books.
“This should motivate him to try and get to where I have,” he added.
“It’s always good to have a little brother who looks up to you and hopefully this will help him push on too.”