By London correspondent Tony Hughes

Eric Dier has doubled his wages to £70,000-a-week after signing a new Tottenham contract worth £19.5million, Football Insider sources understand.

The package will be even more lucrative if the Spurs ace hits bonus targets.

Football Insider revealed last weekend that the defender-turned-midfielder had agreed the terms of a new deal.

Spurs confirmed on their official Twitter account on Tuesday morning that Dier has put pen to paper on a new agreement that runs until 2021.

The England international has signed a new contract even though he had four years remaining on his previous £35,000-a-week deal, which he penned only 12 months ago.

The fresh agreement will elevate Dier into the top bracket of earners at White Hart Lane and is a reward for his status as one of the key players in Mauricio Pochettino’s emerging team.

A well-placed Tottenham source has told Football Insider that the club will pay Dier a basic £20million over the course of the five-year agreement, but it also includes provisions for top-up bonuses based on appearances and the team’s success.

Spurs approached the defender-turned-midfielder before Euro 2016 about tying him down to a new agreement.

Talks were put on hold during the European Championships but an agreement was reached last week and Dier has become the latest member of Pochettino’s squad to make a long-term commitment to the club.

Spurs have been working on deals for several members of their squad, and finally agreed terms on a four-year deal with Christian Eriksen last Tuesday.

Dier had a fantastic 2015-16 season for club and country, proving his versatility and making the holding midfield role his own for both England and Spurs.

The 22-year-old has started all four of Tottenham’s Premier League matches this season, forging a solid central midfield partnership with summer signing Victor Wanyama.

Pochettino and chairman Daniel Levy identified that they need to keep Dier, who is one of a number of highly rated young players in the Premier League’s most youthful squad.

In other Tottenham news, this is how badly Paul Merson got his Spurs prediction wrong.