West Ham United are back in the market for yet another attacker from South America it seems. Not just ‘in the market’ per se. West Ham are said to have lodged an official bid for the Colombian winger. Julen Lopetegui and Tim Steidten worked in tandem to bring Brazilian youngster Luis Guilherme to the London Stadium from Palmeiras for £25.5 million. Strengthening the forward line will be the main priority for Lopetegui now, as well as bolstering his centre-back ranks of course. The Spaniard is said to be keen to complete the majority of his transfer business before our pre-season campaign begin…