The Copa América champion with Argentina in 2021 signed a contract for two seasons with the option of one more, according to the Vigo club.
Agustín Marchesin on his arrival at Celta de Vigo
The 34-year-old goalkeeper arrives in Spain on loan from Porto after three years in Portugal.
Marchesín was chosen by Coudet to replace the departure of Matías Dituro, another Argentine goalkeeper who returned to the Catholic University of Chile.
The native of the Buenos Aires town of San Cayetano will have his first experience in LaLiga and Celta will be his fifth club after Lanús, Santos Laguna and América, from Mexico, and Porto.
