Speaking ahead of the north London derby on Sunday, the forward said: "Obviously, we're realistic and we understand there's a big gap at the top now, but we're still pushing and we have a massive end of the season.
Arsenal sit third in the league table knowing victory over their north London rivals, Tottenham Hotspur, would be a huge boost to the team who missed out on a chance to reach the final of the Conti Cup, after a 2-1 defeat to Manchester City in the semi-finals.
Russo added: "As soon as you sign for Arsenal and you become an Arsenal player, you understand the history of the north London derby, the rivalries within the clubs, and I like to talk to Lotte [Wubben-Moy] and Leah [Williamson] about it because they're lifelong Gooners.
The Arsenal footballer said there is a "big gap" at the top between the north London club and league leaders Chelsea.
"If you understand it from their point of view, coming into the club, it's a game that you must win and it carries a lot of history, but also as players like it's a massive rivalry and a big game for the badge.".
