Fernando Santos is told to bench Cristiano Ronaldo for Portugal's World Cup last-16 clash with Switzerland by Dutch icon Ronald de Boer, who tells the veteran he 'must be a little bit smarter' after public sulk against South Korea

Cristiano Ronaldo should be benched by Portugal manager Fernando Santos, according to Dutch icon Ronald de Boer.

The veteran forward once again was in the headlines for the wrong reasons following his public strop after being substituted off after 65 minutes in the country's 2-1 World Cup group stage defeat against South Korea on Friday.

And De Boer told Talksport that the 37-year-old has to be 'a little bit smarter' in the wake of his latest sulk.

He said: 'It's not only Ronaldo, it's everything that comes with him.