Barcelona coach Luis Enrique has warned his players not to expect an easy ride against Rayo Vallecano.
Barca are smarting from their Champions League defeat at PSG.
Enrique said: "It will be different to Paris, they (Rayo) are a team that I like; they know how to play, they make life complicated for you.
"It will be difficult and we need to be alert. As well as that, the dimensions of the pitch allow them to play the way they want."
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