Bayern Munich defender Dayot Upamecano has revealed that he was afraid to talk as a child because of his stammer.
The France international was scared that other students would make fun of him at school.
Upamecano, who is preparing to face Manchester City in the Champions League, stated that playing football helped him to become more confident.
Upamecano, 24, told The Guardian: 'Today I'm proud because I've progressed a lot.
'I was very scared. When you have a stammer as a kid you're scared to talk because people will make fun of you.