Wales coach Chris Coleman feels their World Cup qualifier against Croatia will be decided by two players.
"On his day Modric is unstoppable, just like our boy Gareth," said Coleman. "Croatia have a lot of good players playing for top clubs around Europe and the icing on the cake is Luka Modric.
"Sometimes when great players - the top, top players - are on form it's very difficult to stop. It is genius.
"Sam Allardyce summed it up after West Ham played Tottenham at Upton Park.
"You can work as much as you like on stopping a player. But if they have the capacity to do what Bale and Modric can do - a pass from sixty yards or scoring the goal Modric scored at Old Trafford for Real Madrid - there is nothing you can do. When they are in the mood, on that form, it is very difficult."