Why? The coursework will be SO much more useful and valuable if he has work experience. An internship doesn’t count IMO. Top MBA programs the students tend to be in late 20s with 4-5 years experience, that is what makes classes so interesting - people bring real world example and experience and can see how the content relates to actual problems. (Note there is a big range, some people will have 2 years, some 10+!).
As a hiring manager I would be no more likely to take someone with an MBA right out of college than someone with a undergrad degree in business. A lot of content is honestly probably overlapping and person still has little experience applying the learning.
(I do have an MBA).