That's a load of bollocks really.
There is no link between the two and you know it. There are an equal number of BME representatives in managerial roles compared to the population - it's fair. Making race an issue - like you are doing - is not helpful.
Why must a race group be over represented in one field just because they are in another? Being a football manager is a completely different skill to being a footballer. Black players often seem to have an advantage with speed and strength which helps in football, but in management, that...
3% of the uk population are black.
4.3% of managers in the premier and football league are black.
Why do we need more black managers? If you want racial equality, stop making race such an issue.