There are eight - two towards the top.A seven man bus on the edge of the penalty area. A quick headcount shows they only have ten players on the field. Was there an injury?
I had a set piece half a minute prior to the screenshot. They played a 5-2-2-1 formation - two defensive midfielders, two wide midfielders and a lone striker. Different screenshot with no prior set piece
That's surely set piece defending isn't it.