Gimnasia paid tribute to the iconic former player and captain of the Argentina side that won the 1986 World Cup in Mexico, describing him as "God".
"For us you are one more Tripero and your heart is as blue and white as ours," said Gimnasia on social media, referring to the club's nickname, which means the gut-handlers, and the team's colors.
Maradona joined the first division strugglers in September 2019 and guided them to seven wins and eight defeats in 20 matches, with five draws.
He resigned in November but two days later changed his mind and announced he was returning.
Ultimately, they were saved from relegation by the coronavirus pandemic and the Argentine federation's decision to cancel the season.
Maradona, who will turn 60 in October, wrote on social media: "Today is the Wolf's birthday," referring to another of Gimnasia's nicknames.