Tottenham could face losing Eric Dier after reports broken on Monday suggest Manchester United are preparing a massive bid.

The versatile 23-year-old defensive midfielder has started all but four of Tottenham's Premier League fixtures in the last two seasons.

Dier has been capped 19 times by his country and appears to have an admirer in Manchester United manager Jose Mourinho.

Mourinho has captured the signings of Victor Lindelof and Romelu Lukaku but wants to strengthen the midfield to allow Paul Pogba more freedom to go forward.

The Reds have been heavily linked with Chelsea man Nemanja Matic but could yet turn their focus to the young Tottenham star.

Dier's value has sky-rocketed since signing for Spurs in 2014 for just €5m from Sporting CP.

According to The Mirror, free-spending Manchester United are preparing a gigantic final offer of £60m for Eric Dier.

Spurs recently offloaded Kyle Walker to Manchester City for over £50m but have no intention of losing their best players at any price.

Walker found himself second choice to Kieran Trippier late in the 2016/17 campaign.

However, Dier is considered a nailed on starter at Spurs and it's unclear how Daniel Levy would respond to an offer of £60m.

Highly rated Argentine coach Mauricio Pochettino is still yet to make any signings so far this summer and would surely not sanction the sale of Dier.

The Mirror believe Spurs have no intention of selling the 23-year-old defender turned midfielder but a £60m bid would surely be a big test of their firm stance.

Dier signed a five year contract worth £70,000 a week at White Hart Lane in 2016 but it is believed that Mourinho & co. would be willing to double his wages at Old Trafford.

It may be worth pointing out that Dier chose the number 15 shirt as a homage to a Manchester United legend.

"I was a big fan of Roy Keane when I was younger," Dier told the Players Tribune in March.

"Then it was Nemanja Vidic [one of the reasons I like the No. 15] and his defensive partner, Rio Ferdinand."