The 16-year-old has risen through the youth ranks at the capital club and caught the eye during the 2020-21 season, registering 10 goals from 22 games in the Under-18 Premier League.
Mubama also found the back of the net in an FA Youth Cup defeat to Arsenal's youth products last term, and his performances at that level are thought to have caught the eye of top clubs.
According to Football Insider, Premier League champions City are closely monitoring Mubama's progress, but they will face competition for the teenager's signature.
The report adds that West Ham hope to tie the striker down to a professional deal following his 17th birthday next month, with the Hammers convinced that he can make a name for himself in the top flight.
Mubama has scored for England at Under-15 and Under-16 level and made his first appearance of the 2021-22 Under-18 Premier League season in a 3-0 defeat to Tottenham Hotspur on Saturday. body check tags ::