Lack of firepower
The Hammers are crying out for a new striker this summer after the likes of Jonathan Calleri, Simone Zaza, Andre Ayew and Ashley Fletcher all struggled to find the back of the net on a regular basis.
Target man Andy Carroll was the best of a bad situation with seven Premier League strikers in 18 league games, but he was limited to just that with knee and groin injuries throughout the 2016-17 campaign.
Sakho could act as a new signing, giving Hammers fans a renewed sense of optimism that they have found their new first-choice striker by hitting the ground running and proving that his injury demons are in the past.