Jovic, Baraghi, and Gonzalez strike early for rampant Italians with Barak adding fourth before break
Humphrys races in on goal to finish low at start of the second half
Hearts have one win from three games in Group A
Istanbul Basaksehir 3-0 RFS in group's other game
Fiorentina v Hearts (17:45)
Robbie Neilson has made three changes from Sunday's league draw at Kilmarnock.
It's the same makeshift back four, but Peter Haring and Cammy Devlin are back in central midfield in place of Orestis Kiomourtzoglou and Robert Snodgrass.
Jorge Grant also returns as Lawrence Shankland drops to the bench.
Image source, SNSJorge Grant (left) is one of three players to come in to Hearts' XI
Fiorentina v Hearts (17:45)
Fiorentina: Gollini, Terzic, Milenkovic, Igor, Biraghi, Amrabat, Barak, Mandragora, Gonzalez, Jovic, Kouame.
Substitutes: Terraciano, Dodo, Bonaventura, Saponara, Cabral, Ikone, Maleh, Ranieri, Venuti, Zurkowski, Duncan, Bianco.
Hearts: Gordon, Atkinson, Kingsley, Cochrane, Halliday, Haring, Devlin, Forrest, Grant, McKay, Humphrys.
Substitutes: Kiomourtzoglou, Shankland, Stewart, Clark, Sibbick, Henderson, Smith, Pollock, Tait.
Fiorentina v Hearts (17:45)
Evening, it's time for some prime Conference League.
Fiorentina host Hearts as the Edinburgh side seek a win that would propel them into second place in Group A.
Can they do it? We're about to find out.