The 2 teams respectively drew their last game, and their recent win rate is not high.
Both sides, from top 5 leagues, are relatively strangers to each other, though they have not played against each other in recent years.
The AH line is -1 for the home side, which is in favor of Wolves.
Meanwhile, Espanyol are currently too busy avoiding relegation to play in European campaign.
So Wolves are expected to win at home.