Melbourne City has confirmed the signing of Adelaide United grand final hero, Bruce Kamau.

The 21-year-old, who emerged as a key player in United's championship side in the second half of the season, has signed a two-year deal with City.

Kamau scored the opening goal of Adelaide's 3-1 grand final win over Western Sydney on Sunday.

โ€œWe're very happy to welcome Bruce into our squad for next season,โ€ City coach John van't Schip said.

โ€œHe is still young, has shown positive signs and he is a player we see as having great potential for further development with us.โ€

Kamau has made 29 appearances in two seasons with the Reds.