The Brazilian playmaker, who turned down a world record move to Manchester City in January, has not played since injuring his foot in the 1-1 home draw with bottom club Reggina on February 7.
"As soon as I manage the pain, I will return, even though I will still feel a bit of pain," Kaka told reporters. "Until last week I was not managing the pain, I hope to manage the pain better in the next few games."
Fellow attacking midfielders Ronaldinho and Clarence Seedorf also missed last Sunday's 3-0 home win over Atalanta, prompting coach Carlo Ancelotti to play two strikers instead of his preferred Christmas tree formation.
Some fans are beginning to wonder whether it might have been better to accept Manchester City's reported 100 million euro ($128 million) bid for Kaka.
"Whoever thinks he has no desire to return is crazy," he said.
Inter must recover quickly from Wednesday's Champions League elimination by Manchester United when they host fourth-placed Fiorentina, who surprisingly lost 2-0 at home to Palermo last weekend, in Sunday's late game.
Second-placed Juventus, seven behind Inter, entertain Bologna on Saturday when they will try to forget Tuesday's defeat by Chelsea.
