Karim Benzema has formed an essential part of Real Madrid's Champions League success, but there are doubts over whether his team can rely on him to extend their European domination this season. The French striker's season has been regularly disrupted by injuries, and although Vinicius Junior is a deadly threat on the left, without Benzema, defences can focus on shutting down the Brazilian winger. His future at Madrid is also unknown -- his contract expires in June and no public decision has been made over a renewal by player or club.