Jenson Button is still confident he will be a McLaren driver in 2015.
Prior to his home grand prix at Silverstone last weekend, team supremo Ron Dennis publicly urged F1's most experienced active driver to "try harder".
The comments were followed by speculation Dennis has already privately told the 2009 world champion his contract will not be extended, although McLaren denies that.
Clearly, however, the relationship between Button and Dennis is strained.
"We have a good understanding," the 34-year-old insisted after the British grand prix. "I'm not - and I shouldn't be - worried about my future in formula one.
"I'm a world champion, I've won 15 grands prix, I'm...
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