https://www.hollywoodreporter.com/features/how-disney-will-make-21st-century-fox-disappear-1182704
In fiscal 2018, Fox had 22,000 employees across the globe (compared with about 201,000 for Disney). Roughly 7,000 are expected to become part of New Fox. Disney has promised $2 billion in cost savings, so more than 4,000 layoffs are expected (though Disney-skeptic analyst Rich Greenfield puts the number at 5,000 to 10,000 over time). It's harder to predict potential layoffs within the Fox film studio itself, which has about 3,200 employees, but cuts are expected to be especially deep, particularly in overlapping divisions such as marketing, distribution and home entertainment.