"It is the first time we have a chance to go forward to the quarter-final. It's a big step for the club, for everyone," Fernandinho told City TV.
Saturday's goalless draw in the Premier League at third-from-bottom Norwich City has left the Manchester club nine points behind leaders Leicester City and just two points above fifth-placed West Ham United with nine games remaining.
Fernandinho was wary of missing out on Champions League football next season, but also refused to write off his side's title chances.
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"We have nine games to play and, even if we don't have the chance to be champions, we have to finish in the top four," he said.
"There is always a chance (of the title), especially with this team. No one gives up, fight to the end."
(Reporting by Shravanth Vijayakumar in Bengaluru. Editing by Patrick Johnston)
