Gleizes was detained in May 2024 after travelling to Algeria in for an article on the club JSK, based in Tizi Ouzou.
He was subsequently found guilty of holding exchanges with a proponent of self-determination for Algeria's Kabyle minority.
Representatives from about 40 different French media outlets said after his sentencing that "the imprisonment of a journalist for carrying out his profession is a red line that must never be crossed".
As well as a seat in the press box, a chair in each France news conference is being left empty to highlight his case.
Journalist Vincent Duluc, who works for French daily sports newspaper L'Equipe, asked a question to Deschamps on behalf of Gleizes about hydration breaks on Monday.
"I hope for his sake and his family's that he can be here as soon as possible and ask his questions himself," Deschamps replied.
