BMW motorsport boss Mario Theissen says he is not worried by the thought of rival outfits trying to poach Robert Kubica after the Polish driver's impressive start to the season.

Kubica has scored three podium finishes on his way to a current fourth place in the Drivers' Championship and also scored both his and BMW Sauber's first pole position in Bahrain.

The 23-year-old is out of contract with BMW Sauber at the end of current season, although the team reportedly ...
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