Moshiri and Usmanov are very closely connected. In the Everton case they are undoubtedly partners with Moshiri being the "face" and Usmanov in a more "sleeping" partner role. They will both undoubtedly benefit from the ground and waterfront development , and we , the club , will benefit from their involvement. What's not to like , unless you are one of the resident doom mongerers.
Every year (for the past 4/5 before this) a person I know gets flown out to Monaco to be MC at Moshiris birthday party.
The party lasts a weekend (the week before the usual Monaco F1 date) and the entire tab (Hotels/apartments/food/drink & entertainment) is always picked up by Usmanov.
He has got 'quite' aquainted with them both and with absolutely no interest in football himself, says that away from business topics, it's all they talk about. He also says they are absolutely and clearly best friends, and can't imagine them not doing everything together.
Personally, I think it's as mentioned above. It's Moshiri's show with a fair amount of feedback from Usmanov.
Saying that, I wouldn't be surprised to see an initially small stake going to Usmanov once Historic England gets lobbed into the dock to help with the filling.