The 19-year-old central defender said he was delighted with the signing.
"I am very happy to sign for Mumbai FC. This club has some excellent players along with an excellent coach in Khalid Jamil. I am looking forward to playing in the I-League and the Federation Cup and want to win every game with this club," said D'Silva who has played for Dempo SC, Salgaocar Juniors and Wilred Leisure SC (of the Goa Professional League).
He was also part of the Goa (India) team that recently won gold in the Lusofonia Games. He contributed by scoring the first goal of the match and, in the process, also the Indian team beat Mozambique 3-2 in the final.