I admit that whenever I have seen him play in previous competitions I have never been impressed.He's not even as good as Besic...
However, I assume that he is not being bought on the basis of what he does in a competition every couple of years, but for his club week in and week out.
I would also say that the Belgian team consistently underperform considering the talent available. Wilmots must be one very poor manager and that may have an impact on how Witsel acquits himself.
I must admit that I do not know anything about his club form in the last couple of seasons.