Looks like that field_image is not under target_id
try this:
field_departimage[LANGUAGE_NONE][0]['entity']['field_image'][LANGUAGE_NONE][0]['uri']field_departimage[LANGUAGE_NONE][0]['entity']->field_image[LANGUAGE_NONE][0]['uri']); ?>);">
However this not the best way to load field value, you should use field_get_items