Real Madrid are currently focused on this Sunday's tie against Girona, but they are keeping an eye on the game against Celtic. After losing against RB Leipzig, Madrid are playing for the top-spot in the group at the Santiago Bernabeu against the Scottish side.
Despite the fact that the Hoops have nothing to play for, a large number of fans are ready to travel to the Spanish capital. According to 'Marca', the 'merengue' side are worried because it is predicted there will be around 7,000 Scottish fans without a ticket.
Security and police forces will have to work flat out to maintain law and order in response to the 'invasion' of Scottish fans, who will fill several bars and restaurants before the game.
'Marca' cited their trip to Barcelona as a similar example, where 20,000 fans travelled, but only 7,000 had tickets.