Slovakia boss Jan Kozak sends warning to Roy Hodgson ahead of Euro 2016 showdown

"It was just a preparatory match," said Kozak, whose team take on Northern Ireland in Trnava tomorrow.

"I was surprised for the line-up. I'm convinced that, considering this line-up, the English are not going to use this line-up in the first match. They have got their usual way of playing and this has just been a test.

"There is quite a number of young English players in the team so let's see how they cope with the pressure of the public, the pressure of expectations, the pressure of the media. There are experienced players in the team, however, most of them are quite young."

Both Liverpool defender Martin Skrtel and Napoli playmaker Marek Hamsik will start against the Northern Irish after Kozak confirmed there would be only two changes from the team which defeated world champions Germany on Sunday.