Marchisio faces a match-up with Viola playmaker David Pizarro.
"We are going to encounter a fiery atmosphere, as their Coach Vincenzo Montella has put his stamp on the team and they have so much quality in midfield.
"They have Pizarro, who after Pirlo is perhaps the best in that role. He creates the Fiorentina play and has great quality, so if we are able to block him then we'll cause them a few problems."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball