Holland's players could see the funny side of an aerial message flown over training yesterday.

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With the likes of Barcelona midfielder Frenkie de Boer and Manchester City defender Nathan Ake prominent, Holland's players were in good spirits ahead of their Euro 2020 opener against Ukraine.

And during yesterday's session one fan had a banner flown over the players with a message for Frank de Boer: 'Frank. Gewoon 4-3-3', urging the Oranje coach to go with a 4-3-3 system for the game.