This comes after the Vitesse Arnhem midfielder refused to honour a national team call-up last year until he was guaranteed of a starting berth.
“I can tell you now that those who continue to disrespect the national team will not be considered for selection in future matches. We can’t continue to tolerate that kind of an attitude,” Mumble told IOL.
“It is not the first time he has disrespected the national team, and he is not going to be called to the national team again.
“It is not only Serero, but all those who continue to misbehave when they are called to represent the country.
“We’ve had a long conversation with the coach about this, and he is unhappy with the ill-discipline of the players when they are called into the national team. We are no longer going to entertain such behaviour,” continued Mumble.
“We understand the pressure that the players go through in Europe. We know it is not easy, but the national team should always come first and also be treated with respect.
“We can’t have the players who coaches the coach. I don’t get involved in team selection, but the coach has stressed that he wants to maintain the discipline. We don’t want prima-donnas in our national team,” Mumble lamented.