Lyon's Champions League clash with Manchester City is "50/50", claims Marcelo, who says "anything can happen on neutral ground".
The two teams are scheduled to meet in the quarter-finals of this season's competition on Saturday night, with the one-off tie set to take place at the Jose Alvalade stadium in Lisbon.
Lyon booked their place in the last eight by beating Juventus on away goals in the round of 16, with the Italian giants exiting early despite winning 2-1 in a second leg encounter in Turin last week.