Dollar's rebound from this Wednesday's low of 87.36 is viewed as a minor correction of near term decline and reckon previous resistance at 88.70 would limit gain, yield weakness to 87.70/80 but break of said support is needed to confirm the fall fm 90.78 has resumed and extend towards 87.00 later.  
On the upside, only above resistance at 89.18 would abort this bearish scenario and risk stronger gain to 89.40/50.