The ex-Real Madrid goalkeeper and captain feels the club’s fans have gone one step beyond what is acceptable by constantly criticising the talisman Real Madrid supporters’ constant jeering of Cristiano Ronaldo is a form of “madness”, according to the club’s former goalkeeper and captain Iker Casillas. The Portugal star is coming off the back of a wonderful 2016 in which he led Madrid to Champions League glory before winning the European Championship with Portugal and then lifting the Club World Cup with Zinedine Zidane’s men.