Preston have eased their goalkeeper troubles by signing Sunderland's Jordan Pickford on a season-long loan.
Hearts have completed the signing of Nigeria international Juwon Oshaniwa.
The 25-year-old centre-back from Madrid is a free agent having recently terminated his contract with relegated Osasuna.
A statement published on Sevilla's official website said Arribas would travel to the Andalusian club's pre-season training camp in Neuruppin, Germany, after passing a medical and putting pen to paper.
Sevilla were rebuffed in a bid to sign Arribas, who made 70 league appearances in two seasons with Osasuna, last summer.