European shares seen down on more eurozone worries—

European shares are expected to retreat on Friday after gains in the previous two sessions, with persistent concerns about euro zone debt problems and Chinese inflation seen putting pressure on the market.

FTSE to open 21 to 22 points lower or as much as 0.4 percent, DAX to open 24 to 26 points lower or as much as 0.4 percent and  CAC to open 25 to 30 points lower or as much as 0.8 percent: Reuters