Those still cost money. Those 4 players on paper you might think cost the club 20m but Sarr signing on fee might be 2-7M. Ceballos loan fee might be 2-5M. Willian signing on fee and wages would end up costing the club £30M over 3 years.
I wouldn't be against Willian on a free if we had the cash and wage space to do it but we dont.
That's great insight, thank you.