“I am really happy because it will be hugely emotional to return to Florence and to meet up with so many people who supported me,” Toni told La Gazzetta dello Sport.
The Italian marksman was a hero of the Viola as he scored 47 goals in 67 games from 2005 to 2007 before moving to Bayern Munich last season in a deal worth around £9m.
“So many friends have called me. I thought we were going to meet in the UEFA Cup last year but it's better to do so in the Champions League. Hopefully we will both go through and we can celebrate together," added the Bundesliga top scorer.
The Bavarian giants will host Fiorentina on October 21 in the group F opener and will fly to Florence on November 5.
“Will I celebrate if I score against Fiorentina? It's a good question and I don't know. I have two months to think about it, concluded the Italian ace.