Real Valladolid have been relegated to the second division this season and they will have to sell a number of players as they want to continue playing in the first division and some might even have options in their contract to be able to join other teams in case of relegation.
Joaquin Fernandez will come in cheap at 3 million euros and a low salary, so just the type of player Valencia CF wants. He's played for Real Valladolid since 2018/19 season as a central defender, though can also play as a defensive midfielder.