Ballack returned to the first team squad for the first time since April but had to be content with a place on the substitutes´ bench against Liverpool in their quarter-final tie at Stamford Bridge.
The Germany captain, speaking to German newspaper Die Zeit, said: "I always believe I would come back. But I have also been incredibly occupied with the injury. I had thousands of questions and none were answered. And sometimes I thought ´Man, you are 31, you´ve had 14 good years as a pro. Maybe it is over´."
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