Gotze has been linked with Everton and West Ham.
He said: “First of all, I hope according to the circumstances that you and your loved ones are doing well in the present situation.
“Today I would like to announce that after intensive consideration, I have decided to make a change in the planning of my career. I have consciously taken my time over this step.
“It is an important decision for my sporting future and I am very much looking forward to working with Reza Fazeli and his agency International Soccer Management (ISM), whose professional competence has absolutely convinced me."