The 25-year-old made his Spain debut against Serbia earlier this year.
Garcia joined Benfica from Spanish giants Real Madrid in 2009.
Garcia will replace Nigel de Jong, who left City for AC Milan earlier on Friday.
What is your opinion? Feel free to discuss the article under. You have to comment by using your Facebook profile. Be fair and have respect for other people and opinions!
Being an amiable guy is good for you and Jurgen Klopp is living proof.
Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.