you cannot use google/teleatlas/navteq or other copyrighted images to draw osm maps...only authorized one like Bing or Mapbox. Have you tried to set up your own wms server for Bing?

btw i tried to add an italian wms authorized to be used for osm but it doesnt load images i attache the output in terminal with errors as txt file if anybody can figure out whats the problem
(it works fine in josm)