Spurs and Andre Villas-Boas' side are sat in third and fourth place respectively in the Premier League table, and are separated by just two points, meaning a win for Chelsea at White Hart Lane would see the west Londoner's leapfrog their capital rivals.
Ivanovic told the club’s official website: “Tottenham is one of the most important games for us this season. It could be a crucial game and afterwards we can go up in the table and try to come back and fight for the title.
“We will do everything to change the situation where we are behind the leaders, and this is a very difficult game for us but we need to do well. Tottenham is always tough but we will do our best.”
John Terry and Ramires have been passed fit for the clash, and whilst the Serbian defender is pleased at the two player's inclusion, he is aware a collective team effort will be needed to defeat Harry Redknapp's side.
“It is good that John and Ramires will be ready for the game but it doesn't matter so much who plays, Tottenham play like a team, they work hard collectively but also have outstanding individual quality in their squad.
“We have to match them, and their top players, and believe in ourselves and play better football.
"They're very dangerous on the attack and creative in the midfield, but combative as well with Scotty Parker who used to play here, so Chelsea know about him and we also have players who can decide a game.
“It will be a big atmosphere and we have to be ready for that because they always have an extra motivation against us.”
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