I actually in possession with an orthopho of resolution of 15cm accuracy, and I have downloaded the Sentinel 2 imageries with 13 Multispectral Bands of 10,20,60 metres resolution. Am actually working on a project for the mapping of Environmentally Sensitive Areas (ESA). So I wanted to enhance the quality of the satellite imagery using the orthopho but the problem is the that the orthophoto dates to 2007 this is the best available high accuracy aerial imagery. Won't there be errors when it will be fused and how is it possible for me to fuse it using ArcGIS software.