[vaduz]

Under current laws, city council of Florence does not have extraordinary power of pardon and clemency - President of the Republic of Italy does.

The declaration you linked is symbolic only - and the Italian sources [0] indicate the plan this time is to look if the case can be re-tried in light of some new evidence.

[0] https://www.corriere.it/cronache/21_gennaio_31/contro-mio-av...