The Viola head honcho has honoured his former captain, who passed away in March
Central defender Astori – aged only 31 – passed away in his sleep on March 4 ahead of Fiorentina's planned Serie A fixture against Udinese.
Fiorentina full-back Cristiano Biraghi got a tattoo to remember his former team-mate earlier this week, which displayed a black ribbon and the lettering #DA13.
Now coach Pioli has been inked to commemorate Astori's life, as shown by a tattoo studio in Florence on Instagram.
Since Astori's death, Fiorentina have won six consecutive league matches and are just two away from breaking their club record for successive Serie A victories.
Pioli says their upturn in form is down to the team becoming more united team following Astori's tragic passing.
"He [Astori] always had a long-term vision, he was one of the first to believe in our new path, and he put in a lot of effort to help his team-mates develop," Pioli told RAI.
"We were playing good football even when Davide was with us, but we lacked consistency, which is also normal given the changes that we'd made.
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"Now we are more of a team, more mature and the results are arriving. We're reaping the rewards of a very long but positive job."
As it stands, Fiorentina will qualify for the Europa League in seventh place.
