Jarolim lost his place in their recent derby defeat to St Pauli.
The midfielder told Bild: “During my stay at this club, this is nothing I have ever experienced before.
“It would be nothing other than a lie in denying that this is a big factor of frustration for me.
“I am on the top of my fitness, I am doing fine in training, I am fully motivated and I am ready to play from the start for my club.”
