I'm generally in favour of affirmative action as a concept. Fight asymmetry with asymmetry—dialectically. 😉
For example, despite all the scares about tokenism and unmerited advancement (invariably from those who haven't merited their own advancement!), where implemented, gender quotas don't seem to hurt political parties, parliaments, boardrooms or software development teams.
The details of policy implementation would be the real challenge here, but it's a problem that there are so many black players and so few black managers. Chris Hughton and … who else in top flight footy? Rijkaard and Gullit … probably a few others I'm missing.
However this measure's pretty unexceptional, it just says consider a minority candidate, there's no real imposition on the club, it's just inviting them to change their parameters a bit..