Garrido has known Silva since he was 14 and says his compatriot has the skills to be a huge success with Manchester City.
Garrido is looking forward to teaming up with Silva again when the Spanish World Cup winger finally joins up with the Blues squad, having wrapped up his £24million move from Valencia earlier this month.
"I've known David since I was 15 and he was 14," said the defender. "Because he was so good even then, he played in the team a year older than him. We played together at every level until Under-21.
"He then went to the national team, but he was always able to play around older players. We know each other really well, and he called me before he signed to ask about the team and this club.
"I told him that everything here is good, and my opinion is that this will be a great move for him because there is already a great squad here, which I'm sure he will fit into.
"He may not look big or strong, but he is a very clever player who reads a game well. He's a great passer of the ball and he's dangerous near the box. He is versatile as well - he can play in the middle or wide on the left, I'm certain he can well in England.
"David has shown for Valencia and for Spain that he can play in the big, big games, and City having such good players will make it easier for him."