West Ham's 19-year-old attacker Luís Guilherme was recently a target for Portuguese club Porto. Another Portuguese side, Sporting, has now advanced in negotiations for his permanent signing. The discussions, which initially centered on a loan with an obligation to buy, are now nearing an agreement for a direct purchase. The clubs are finalizing the transfer values, which are set to include a fixed fee plus performance-related add-ons. Both parties are confident of a positive outcome. The player is said to view a potential January move to Sporting favorably.