"It is a dream to play for one of the biggest teams in the world," said the midfielder who completed his loan move from Atletico Madrid with an option to buy for £4m at the end of the season.
"I am proud to be another Portuguese figure in this squad that is proving to be very strong. Luis Figo told me so much about Inter, how this is like a big family and I'll settle in really well."
Maniche put pen to paper on a contract today after undergoing his medical, spoke with Roberto Mancini and gave his first interview with Inter Channel.
"I knew him as a great player, now I will get to know him as a Coach. I am at his complete disposal.
"Inter want to win the Champions League and with this squad we have the chance to do really well. It will be a great challenge against Liverpool, but we aim to win so we can go as far as possible."