The agent of James Rodriguez says Manchester United's pursuit of the Porto star is a 'complex situation'. Silvio Sandri admits United are moving for the Colombia international, but was reluctant to expand on initial comments.

"There is nothing new ... This is a subject that is being analyzed by FC Porto. Within 10-15 days I'm going to Portugal for talks with the leaders of the club," he told O Jogo.

"I cannot say much about this subject. It is a very complex topic. I apologize."