The question had been asked and there had been a promise made for the very version of Picasso that I am using: How do I send a circular bitmap to an ImageView using Picasso?
There is a transformation library for Picasso.
Just add gradle dependency
implementation 'jp.wasabeef:picasso-transformations:2.2.1'
End use it
Picasso.with(context) .load(url) .resize(w, h) .transform(new CropCircleTransformation()) .into(imageview);
Wiki: Picasso Transformations