But Sven believes that Claudio has done a very good job, saying "It has been a difficult season but I must say he has done a great job - second in the league and reaching the semis in the Champions League, it has been a great season.
"I think he is used to this speculation. He is Italian and every day in Italy there are rumours. I think he is handling it very well."
Sven also spoke of his links with the Chelsea job, adding: "I think it was important when the speculation came out to kill it and I signed a long contract.
"It was important it stopped before Euro 2004. Had it dragged on it would have spoiled a big tournament and made it impossible."