If Belgium win this match then Belgium can play in the next round. But it doesn't seem that Belgium can win this match. I think Croatia will win this match. We have seen that Croatia played very well in previous matches, today if Croatia can play well then Croatia will win.
If this game were held in other conditions, then I would call Belgium an unconditional favorite, but given the fact that there is an internal conflict in the team, I agree with the assessment of the bookmakers who give equal chances to both teams. Purely tactically, Croatia has an advantage, as they are satisfied with a draw, and Belgium will be forced to play only to win.