As in, if you are about to be a junior, you are not allowed to transfer into Northwestern, unless you don't have 2 years of credits.Not likely. Admissions isn’t exactly friendly to undergrad transfers.
Its definitely a hurdle, but protects the academics.
We should keep a keen eye out for late bloomers, like Martinelli. Not really recruited much based on high school junior season, makes massive jump as a senior, after everybody has committed to their respective colleges. That sort of player is out there every year. Justin Mullins was similar. Big year at Oak Park HS after committing to Denver University. Then solid freshman year against lesser teams.
And of course grad transfers will be important.