The 32-year old Czech Republic international has been playing professionally since 1999 but has no plans to hang up the boots in the near future as he targets a long career at the top.
"It's hard to predict anything in football," he told isport.blesk.cz.
"As long as I'm relatively healthy and my body will let me continue, I will continue. Touch wood, at the moment nothing is preventing me from training at 100 per cent.
"It may happen that with age a problem will appear and then my ideas and plans naturally would be irrelevant.
"I have been doing everything to stay fit. Up to what age I will be able to on the professional level, I can't tell. It will also depend on how long I can have the joy (of playing)."
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