Shaw admitted that his younger colleague doesn't really appear to have a weaker foot.
“Mason's a joke," Shaw told Soccer AM. “Sometimes he'll take a free-kick with his right, sometimes he'll take a corner with his left.
“In penalties the other day, he just took it with whatever foot he felt like.
“100 per cent he's as good with both feet. He's so composed and confident that he can use whatever foot he wants.
“Honestly, you wouldn't really know what foot he is, and when he first came into [first-team] training, the lads were like 'what's this guy doing?'
“None of us really knew and obviously he's just as good with both feet, so we were all shocked.
“It just shows the ability that he has and he's still so young, he's still got so much to learn."