The Dragons have signed Adrian Lopez, Bruno Martins Indi, Casemiro and Cristian Tello, among other players, and they have no plan to stop any time soon.
According to O Jogo, Porto have agreed a deal for Osasuna goalkeeper Andres Fernandez, while they are on the verge of signing Ivan Marcano from Rubin Kazan.
Andres Fernandez is widely regarded as one of La Liga’s top goalkeepers and he was previously linked with both Barcelona and Real Madrid.
The 27-year-old has spent last seven years at Osasuna, making a total of 113 league appearances for the club.
Meanwhile, Ivan Marcano has played for Rubin Kazan and Olympiakos since leaving Spain back in 2011 and he now appears ready to return to his native country.