Marin struck in the Europa League win at Guingamp.
"I am working hard with Mario to find the best rapport on the field," Chelsea loan Marin told the Corriere Fiorentino.
"I know him very well, that he's a great champion who can do important things for Fiorentina. We will play together from the first minute soon and I already have many assists ready for him.
"With his goals, together we can push Fiorentina towards the objectives the club picked at the start of the season."
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