When Toby Alderweireld signed for Tottenham Hotspur in summer 2015, the club produced a video instructing fans how to correctly pronounce his surname.
Once heard a few times, it is not too difficult to say, but compared to some of his team-mates' names, it is a mouthful. It certainly does not lend itself to being adapted the simplistic repertoire of football songs and chants commonly heard performed by fans these days (though this writer thinks Steppenwolf's "Born to Be Wild" is ripe for adaptation).
This is the only reason you have not heard Alderweireld's name more around White Hart Lane and other grounds for Spurs games recently, because in a full-blown case of absence making the heart grow fonder, the defender became even more popular during his recent injury layoff.