Mariano has passed a medical ahead of signing a three-year deal at Sevilla, which will complete his move from Bordeaux.
Bordeaux right-back Mariano is set to seal his switch to Sevilla after passing a medical on Monday.
Sevilla made a move for the Brazilian after Aleix Vidal departed for La Liga rivals Barcelona earlier in the transfer window following a string of impressive performances for the back-to-back UEFA Europa League winners.
Mariano joined Bordeaux from Fluminese in his homeland back in 2011 and has been a regular starter for the Ligue 1 club ever since.
A statement on Sevilla's website on Monday confirmed that the 29-year-old had come through a medical and will sign a three-year contract before being officially presented on Tuesday.