Nani says Manchester United aren't dwelling on their humiliating Champions League exit.
United went out of the Carling Cup and Champions League in the space of eight days.
But a 4-1 victory over Wolves on Saturday cut the gap on City at the top of the Premier League to just two points with Roberto Mancini's men facing Chelsea at Stamford Bridge tonight.
In the New Year, United face City, also out of the Champions League, in a third- round FA Cup tie too.
Nani said: "It's been tough. It's so disappointing to be out of the Champions League after the group stage.
"But we're still alive and must do our best to win the competitions we are in."