The former Swansea and Everton boss says their “incredible" energy and could create problems for Belgium.

"We faced Japan not long ago in a friendly. I think in essence the team is exactly the same, footballers with an incredible, incredible energy," he said.

"I expect a very tough game, a game that we'll have to be concentrated at all times because they  are capable of creating problems."

The 44-year-old added that Belgium are not underestimating their opponents and said the match could go all the way to the penalty shootout.

Asensio's Screamer Vs FC Barcelona
Asensio's Screamer Vs FC Barcelona
In one of Real Madrid's most outstanding performances at the Camp Nou, Los Blancos beat FC Barcelona 3-1 in the Spanish Supercup. Real were leading 2-1 after Cristiano Ronaldo's 80th minute goal, but just before the final whistle, we sealed the win with this beautiful Marco Asensio strike.
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Belgium, who won all three of their group-stage games, are set to face Group H runners-up Japan in their round of 16 match at the Rostov Arena on Monday.