Sagnol said: “We have lost four important players with the departures Ballack, Ze Roberto, Jens Jeremies and Bixente Lizarazu. We’re missing a bit of experience.
“Of course things were better when he [Ballack] was here. He was a great player, and always capable of scoring.
He added: “This period is difficult for us now, and it will probably stay like that until the winter break.”