"I just want to take two minutes to say something about our captain, Yusuf Maart," Youssef told Radio 2000's Game On.
"If it were another player, he would have stopped playing football because the criticism they have made of him here makes no sense.
"I have some friends who are coaches, so they watch the game and ask if it's true what is said about the captain. I send his physical performance, and I try to ask them, because for me, maybe because I'm close to him, I don't see these mistakes," he continued.
"In each game we play, we hear only two things. Change the keeper! Change Maart! You feel like the problem of Kaizer Chiefs is Yusuf Maart and the goalkeeper, and the only two things you hear."