Rayo just have the one concern, with Martin Marquelanz a doubt with a knock. Sergi Guardiola scored last time out and is likely to lead the line with Randy Nteka playing out to the right. No change is expected elsewhere given how well Rayo have played of late. We should see new signing Radamel Falcao in Rayo colours for the first time here, although likely from the bench. Sabit Abdulai remains out long-term with a knee ligaments injury, and there is a fresh blow for key man Mauro Arambarri, who has been ruled out until October with a muscular injury. David Timor is likely to come into the midfield, while Sandro Ramirez is expected to start ahead of Enes Unal up top.