Nani has labelled the five-year deal he signed with Manchester United as the lowest moment of his life.

In September 2013, the Portuguese winger put pen to a brand new contract which was set to keep him at Old Trafford until the summer of 2018.

However, that season he made just 13 appearances total under David Moyes in what the 29-year-old recalls as one of the darkest times of his playing career.

"It could have been the best moment of my life but it turned into the worst," Nani told The Guardian regarding the long-term deal.

"After you sign a contract like that, you think all the people will be behind you and help you.

"And you see the opposite. Then the stress comes. I was down and, when it's like that, of course, the injuries come too. It was a bad moment. It was something that made me very down, very disappointed."