Writing on Twitter, reliable Tottenham Hotspur correspondent Alasdair Gold believes Juan Foyth possibly joining Villarreal on a permanent deal this summer could be a transfer which 'comes back to bite Spurs' - with the La Liga side possessing an option to sign him for around £13 million on top of the loan fee. 

Foyth has impressed under former Arsenal boss Unai Emery on the continent recently after a slow start to life in Spain, often displaying his versatility as a right-back, centre-back or defensive midfielder (football.london).

Gold fires Foyth warning to Spurs

So far, the 23-year-old has made 27 appearances for Villarreal in all competitions and 14 in La Liga - with Gold relaying that Spurs could be set to lose a young player 'on the up' this summer (football.london).

Sending a warning, Gold believes Foyth and his spell at the Estadio de la Cerámica should be a lesson for the Lilywhites over loaning out promising youngsters at the right time (Twitter).

Given the option-to-buy inserted into the starlet's loan agreement at Villarreal, Gold explains that Spurs now look unlikely to benefit from his recent rise to prominence and experience gained.

Instead, Spurs may just receive a relatively low transfer fee for a highly promising youngster.

Transfer Tavern take

According to WhoScored, the Argentine has made an impressive 2.6 tackles per 90 in those 14 league outings whilst managing to find a teammate with 87.4% of his passes.

Last year, the Athletic journalist Charlie Eccleshare heralded Foyth as a 'really exciting' player - and Tottenham possibly losing him this summer for just £13m comes as an possible hiccup by chairman Daniel Levy, who will be looking to raise big cash through sales to spend on any incoming players.

Emery, speaking to AS recently, even admitted he would like to keep the starlet - and it seems like only a matter of time before they make his move permanent judging by his accolades this season.

In other news: Tottenham make enquiry for £225,000-per-week star, find out more here.