Eder believes Inter can finish the season with multiple trophies.
He told Radio Sportiva: "I always support them from Brazil, they are a tough team that has taken on a strong identity since (Antonio) Conte's time and is continuing with the excellent work of (Simone) Inzaghi, who managed to take Inter to the Champions League final in June.
"It will be tough for Juve, the duel will continue: the Bianconeri don't play great football, but they manage to hold on until the end. For me, beyond my support, Inter will win the championship and are favourites to also win the Super Cup."
Eder left Inter for Jiangsu Suning, before Inter's owners pulled out of the club. The decision made by Suning came three months after Eder and his teammates won the C-League title.
The Brazilian also said: "I was hard on (Steven) Zhang for how they behaved towards us during the pandemic in China. We managed to win the 2020 championship and when they closed the doors, they no longer wanted to talk to me and had the wrong attitude. I was sad, but I don't hold a grudge. I expected more at the time, but there's no point talking about it anymore."