EDINBURGH, Oct 10 (Reuters) - Britain's FTSE 100 index is seen opening down 69 to 73 points, or 1.1 percent lower on Friday, according to financial bookmakers. For more on the factors affecting European stocks, please click on
* The blue-chip FTSE 100 index closed down 0.8 percent, or 50.39 points, at 6,431.85 to post its lowest close since October 2013 on Thursday, giving away early gains in a broad-based sell-off as investors fretted over signs of serious weakening in the euro zone economy.
* The S&P 500 on Thursday posted its largest percentage decline in six months on concerns about the strength of the global economy and its effect on corporate earnings.
* Brent crude futures tumbled nearly $2 to below $89 a barrel on Friday, hit by the weakening economic outlook, while gold, considered a safe haven in times of uncertainty, was set for its best week since June.
* OLD MUTUAL - Sky News reported on Thursday that South African financial services group Old Mutual PLC is in advanced talks to acquire Quilter Cheviot, which it said is Britain's second-biggest independent wealth manager, for about 650 million pounds ($1.05 billion).
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