Ivanovic told his team-mates to ignore the speculation over Andre Villas-Boas' position.
"I can't say who will stay," he said.
"For us, we have to be more focused on our jobs. We don't have to care about these things. I think it's a hard position, very difficult.
"For us, it's very important to stay together. Our team, our squad is not doing what is expected of us. This is a fact."