Sporting v AZ Alkmaar
Sporting are without suspended captain Beto as they attempt to reach the final to be held at their own stadium.
Nigerian Joseph Enakarhire steps in for Beto while top scorer Liedson returns after suspension.
AZ coach Co Adriaanse will field a makeshift back four, with Joris Mathijsen and Jan Kromkamp injured and Barry Opdam suspended.
Winger Martijn Meerdink is out injured for the Dutch side, who were beaten to their domestic title by PSV.
