Liverpool, Real Madrid and Barcelona are continuing to monitor Sevilla centre-back Diego Carlos, according to ABC Sevilla.
The Brazilian was originally linked with the Reds back in December, and it appears they have retained an interest in the player.
Sevilla only signed Carlos from Nantes for €15m last summer and ABC Sevilla report that the Spanish club would refuse to sell him. They say his market value has now trebled, which means any club would have to pay at least €45m (£42m) for the defender.
The Merseyside club could well be in the market for a new centre-half in the summer, with the likes of Lazio, Arsenal and Tottenham having been linked with a move for Dejan Lovren over the past week.
Whether Carlos would be worth the outlay, considering he is already 27 years of age, it remains to be seen. Liverpool don’t generally invest large sums in players who are in their late twenties, and it would be a surprise if they changed their policy for the La Liga star.