Dier, 21, has been one of the breakout stars of the Premier League season, as having played at centre back or right back last term, he has carved out a new role for himself this time around.
Mauricio Pochettino has deployed Dier as a defensive midfielder this season, and it's worked to great effect, as Dier has protected the back four whilst allowing Dele Alli and Mousa Dembele to get forward and attack.
Having moved to Portugal at a young age, Cheltenham-born was still eligible to represent Fernando Santos' men, but his impressive displays this season led to Roy Hodgson calling him up for England international duty back in November, earning caps against Spain and France.
Now, Dier is in line to feature for England at this summer's European Championships in France, and Ray Wilkins is backing him to beat Michael Carrick to a role in front of the England defence.
Speaking to Sky Sports, Wilkins has praised Dier as 'outstanding' this season, and believes his chemistry with Dele Alli in midfield should help England at Euro 2016, if Hodgson decides to start both players.
Wilkins also compared Dier to Chelsea midfielder John Obi Mikel, stating that both players can break up play and keep it simple, serving a vital role.
"It will be either Michael Carrick in front of the back four for me or Eric Dier," said Wilkins. "Dier has been outstanding - he really has played a good season for Spurs and he gives them that reliability. He just sits in front of the back four... if a centre-half gets injured, he can naturally play centre-half so he's a good foil to have in your team."
"At times, it's vitally important [to have an understanding with Alli] especially in the defensive areas. He's a bit like John Obi Mikel, nothing spectacular but he understands the role and he does it to a very good effect," he added.
Should Dier start for England at Euro 2016?