Danilo will head to Porto in a deal rumoured to total €16 million, leaving Santos with just the error-prone Pará and 17-year-old Crystian as available right-backs.
With the help of the Teisa investment group, Santos have beaten off competition from Palmeiras to secure the €700k purchase of the right-back.
Jonas, 24, has been a consistent presence in his position this season, making sixty-three appearances for Coritiba and attracting the interest of many of Brazil’s bigger clubs.