Man United manager Sir Alex Ferguson is "unfazed" by the latest reports linking Cristiano Ronaldo with Real Madrid.

Catch the latest transfer news on SportsCenter Right Now with Debbie Lin

Respected Spanish journalist Guillem Balague claims Ronaldo has agreed a deal with Ramon Calderon to join Real in the summer.

Balague claims on his website that Ronaldo and his agent Jorge Mendes have struck a deal with Calderon and not with Florentino Perez, the former Real Madrid president.

But Ferguson is so unmoved he barely felt it was worth a cursory response.

"We expected January to be like this," he said.

"We are not fazed by it now; we just have to accept it happens."

But Balague - and Spanish newspaper AS - say the newly-crowned FIFA World Player of the Year has agreed in principle to go to Madrid in the summer and may request a transfer from Manchester United.

The journalist admits, though, that 'In spite of Ronaldo's agreement with Ramon Calderon, the refusal of Sir Alex Ferguson to sell his best player remains a significant obstacle to the transfer to Madrid going ahead. And, if United refuse to sell, then the secret agreement with Calderon remains nothing more than that.'