Usmanov is already as involved in Everton as he needs to be. Away from football Moshiri is still his right hand man and good friend, so you would imagine some discussion concerning Moshiris plans for our club would take place. Despite his great wealth financial restrictions mean he could only improve our situation incrementally anyway, exactly as Moshiri is doing. The funds and contacts Moshiri is accessing on our behalf would be exactly the same as if Usmanov were doing it.
As our position (we hope) improves this will reflect extremely well on Usmanov and greatly strengthen his hand in the struggle with Kroenke, which I believe was the intention from the beginning.
Put simply Usmanov is exactly where he needs and wants to be concerning Everton.