Well.. I somewhat agree with this statement. When Danish Kaneria was in the cricket team, there was another non-Muslim in the playing XI (Yousuf Youhana, who later became Mohammad Yousuf). While Danish was free to follow his religion, Yousuf changed his religion and became a Muslim (a lot of people claim that he did so in order to gain a permanent slot in the playing XI). And another player (Shoaib Akhtar) used to dissociate himself from religious activity (his views might have changed now). So in the end, I don't see any clear bias in terms of religion.
Salam,
In Pakistan a lot of people are religious but I highly doubt that here cricket board has some issues with the players being of another religion because they are a big cricket board and if something like that happens they will be in big trouble. I really don't think that the players who have converted to Islam, really did not have anything to do about this with being a permanent player in the playing 11. they did it more because they just love religion.
Regards
Duke