Isco's current contract at Real Madrid will expire in the summer of 2018. Getty

Real Madrid star Isco has ruled out making a shock move to Barcelona amid reports claiming that he has received a lucrative offer to move to Los Blancos' arch-enemies as a free agent once his contract expires in 2018.

The Spanish international long-term future at Zinedine Zidane's side has been under scrutiny in recent months amid delays in the negotiations with Real Madrid to sign a new deal. The former Malaga midfielder has publicly admitted that he could consider making a move away due to frustration over a lack of playing time.

Last month Catalan Radio Station Rac 1 reported that Barcelona wanted to take advantage of the situation and had offered him a signing bonus of €20m (£17.1m, $21.3m) to turn down a new deal at Real Madrid and move to the Nou Camp as a free agent at the end of next season.

Isco, 24, added more fuel to the speculation on Thursday evening after posting a picture in his Instagram stories with a packet of Barcelona crisps.

Barcelona and Real Madrid fans quickly react on the social media as it was well known in Spain that Isco has a pet dog named after Lionel Messi – amid suggestions that before moving to Los Blancos in 2013 he was a supporter of the Catalan side.

However, Isco quickly removed the picture from his Instagram before posting a tweet in which he made it clear that he will not join Barcelona.

"I'm not going to (join) Barcelona!! With the photo I wanted to say that we are going to eat them like crisps #HalaMadrid !!" Isco said ahead of the coming El Clasico to be played at the Santiago Bernabeu on 23 April.

"By the way, I have not even tried them! They were my friends (who put them there) to put to wind me up."