Belgium manager Marc Wilmots has said that his side's Euro 2016 qualifier against Wales is an "important" one as they look to keep pace with the Group B leaders.
Wilmots's side are third in the group, three points behind Chris Coleman's men having played a game fewer.
Before the match, the 45-year-old told reporters: "The game against Wales is an important game. Wales have changed a lot during the last few years.
"They are fast, young and have a lot of options. I don't know how they will play.
"It's important that we keep our organisation like we practice in training sessions."
The two sides played out a 1-1 draw the last time they met.