Arsenal are in need of defensive reinforcements in January, after a number of injuries and poor performances at the back, but which players have been linked with a winter transfer to North London?

1Fernando Calero

Real Madrid's Spanish defender Alvaro Odriozola (L) vies with Real Valladolid's Spanish defender Fernando Calero during the Spanish league football match between Real Madrid CF and Real Valladolid FC at the Santiago Bernabeu stadium in Madrid on November 3, 2018. (Photo by JAVIER SORIANO / AFP / Getty Images)
Real Madrid’s Spanish defender Alvaro Odriozola (L) vies with Real Valladolid’s Spanish defender Fernando Calero during the Spanish league football match between Real Madrid CF and Real Valladolid FC at the Santiago Bernabeu stadium in Madrid on November 3, 2018. (Photo by JAVIER SORIANO / AFP / Getty Images)
  • Age: 23
  • Position: Centre-Back
  • Contract until: 2021
  • Club: Real Valladolid
  • Estimated transfer value: £7.2m

Arsenal reportedly ‘registered their interest‘ with Real Valladolid for their defender, Fernando Calero, at the start of December.

23-year-old Calero has caught the eye of several top European clubs this season, including the Gunners who have also been attracted by his reported €11m release clause. At this point, however, it should be noted the release clause has not been confirmed. Calero’s current contract runs until 2021.

A centreback who can play left or right, the right-footed Spaniard struggles in the air so that’s something he’d certainly need to work on if he arrived at Arsenal.

Unlike many others we’ve seen play back there for Arsenal over recent times, however, Calero has no issues with his concentration throughout a game. Plus, his ability to position himself in order to block shots is very good.

The player recently visited London, though he claimed afterwards it was just for a holiday, not to complete a transfer. We’ll see if his trip convinced him that he could live in the city permanently.

Click ‘Next’ for more centre-backs linked with a January move to Arsenal

Back