The Portuguese winger became the third Red to miss from the spot in as many matches when his tame shot was saved by Galatasaray goalkeeper Fernando Muslera on Wednesday night.
“I was waiting for the goalkeeper to make a movement but he was very clever and didn’t move until I’d chosen a side,” Nani told MUTV after the match. “He made a great save.”
Javier Hernandez and Robin van Persie have also missed penalty kicks this term, while Wayne Rooney, Nani and Ashley Young all wasted efforts from the spot during the summer’s pre-season tour.
Nani shrugged off the suggestion that United’s penalty woe was becoming a serious problem, however.
“This is just a moment. Everybody has missed a chance. Next time it doesn’t matter who’s going to take the penalty – we’ll score, 100 per cent.”
Meanwhile, Sir Alex joked that he didn’t want any more penalties in the foreseeable future and admitted he thought Robin van Persie should have taken responsibility from the spot on Wednesday.
"Maybe the confusion arose from the fact that Chicharito took it on Saturday when Robin wasn't available and today Nani grabbed the ball because he wanted to take it.
"Robin van Persie, to me, takes great penalty kicks. I don't see why he shouldn't take them."