There is an elephant in the room about imminent West Ham signing Luis Guilherme and it simply must be addressed. Two weeks ago the vast majority of West Ham fans had never heard of Luis Guilherme. In fact it is highly likely that most journalists covering Premier League and European football – if they’re honest – won’t have heard of the man West Ham are about to sign for around £25m either. Of course those who are experts in South American football may well have had an idea about the clearly talented teenager. But the sudden links to the Palmeiras talent had most Hammers fans, including yours …