European stocks sag at open

London's benchmark FTSE 100 index reversed 0.2 percent to 7,497.30 points compared with the closing level on Friday.

In the eurozone, Frankfurt's DAX 30 index also shed 0.2 percent to 12,236.70 points and the Paris CAC 40 nudged 0.1 percent lower to stand at 5,546.83.