The 18-year-old French defensive midfielder was previously with Paris Saint Germain, making five appearances for the Ligue 1 champions’ Under-23 side in the UEFA Youth League.
The highly-rated teenager, who turned 18 on Monday 23 July, has also represented France at various youth levels and is the current captain of Les Bleus’ Under-18s team.
Gomes is quick, strong and an excellent tackler with great vision and energy.
He is now in the US with the first team squad and could feature in the Blues’ remaining tour matches against Liverpool and Bayern Munich.
Everyone at Manchester City would like to welcome Claudio to the Club.