​Real Madrid manager Zinedine Zidane has reportedly issued Manchester United target Gareth Bale a warning to return to form, or risk losing his spot in the side. 

Bale was heavily linked with the Red Devils throughout the summer transfer window and has since struggled to find a consistent level of form, with those at the Bernabeu whistling the Welshman off the field last month following a less than impressive performance from the forward. 

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