Dier, a tall central defender who has risen through the ranks at Sporting, signed professional terms with the Portuguese club last year.
And while the name and current club may mislead, Dier is that rarest of commodities in the modern game – a young English player starting his career abroad.
The young starlet was spotted by the Portuguese giant’s scouts and signed to the youth academy at the Estadio Jose Arvalade, where he has performed at under-15, under-17 and under-19 level.
"If the offer came today, I wouldn't say I'd take it because I'm not sure it's the right time," Dier told BBC Sport.
"But if I cemented a place in Sporting's first team and felt I was ready, then it would be very hard to turn down."
And while authorities in Portugal are already throwing courting glances Dier’s way with a view to making him a Portuguese citizen, the defensive prodigy affirmed that playing for England is a dream of his.
"For sure. I think it is the dream of any kid to play for England and play for your country."
"I love the training, the Portuguese people, the Portuguese culture. Everything about this place I like.
"I've never seen the need to move from Sporting to anywhere in England or any other country because Sporting has a great history of bringing players up to play in the first team and go on to play in great clubs in Europe.
"People tell me about players who have gone to places like Arsenal and Chelsea and had to come back looking for clubs because they've got nowhere to play."
