Nani was greeted by thousands of Fenerbahçe fans and admitted that he could not believe the turnout.
“Thank you all and now I am sure I made the right decision to come here this is a great opportunity for me,” Nani said speaking at his signing ceremony.
“I will my heart for this club I will give my best every game to make you happy with me.”
The four-times Premier League champion will now take questions from reporters in the stadium press room.
Fenerbahçe released a statement on the stock exchange today confirming that Nani has joined on a €6 million move from United on a three-year deal.
Nani will become the third Portuguese international in the current Yellow Canaries team after Raul Meireles and Bruno Alves.
The former United man is also expected to become the highest paid player in the current side.
Fenerbahçe are coached by Portuguese manager Vitor Pereira who replaced Ismail Kartal last month. The Yellow Canaries finished last season as runners up and booked a place in the Champions League playoff round.