According to what was communicated by the club ACF Fiorentina, the tickets for the Away Sector for the match Fiorentina-Atalanta which is scheduled for Sunday 20 February with kick-off time at 12.30 CET at the Stadio Artemio Franchi, will be put on sale from 3 p.m. on Monday 14 February on TicketOne. The sales will end at 7 p.m. on Saturday 19 February.
You can find all the information on the purchase procedure on the website https://www.acffiorentina.com/it. The ticket price is € 20,00.