Celtic defender Gary Caldwell knows his team-mates need to keep their heads no matter the level of provocation they face when they meet Argentina at Hampden on Wednesday night. George Burley's assistant, Terry Butcher has warned that their opponents will stop at nothing when it comes to obtaining a result.

"Terry was saying that to us last night," Caldwell told The Telegraph. "They are horrible to play against, they don't make it easy for you and will do anything to win. As Maradona showed, they'll try anything to win a football match.

"We have to be ready for that challenge as well - and not get drawn into all their dirty tricks. I'm sure they will use that throughout the game. So we have to stand up to it and try and be bigger than it."