As euro has fallen after meeting renewed selling at 1.5665, suggesting the decline from this week's top at 1.5819 to retrace recent upmove would extend towards 1.5540/50 but oversold condition should keep price above previous support at 1.5486 and yield recovery later.  
On the upside, above 1.5665/66 would signal a temporary low has been formed and bring rebound to 1.5700, however, resistance at 1.5761 should remain intact.