Usmanov feels Wenger would spend money - if he was given it.
"There is a widely-held view among most commentators - and one that I agree with - that the club needs to stiffen the defensive spine of the team, with a dominant keeper, strong centre-halves and a powerful defensive midfielder in the mould of Claude Makelele," he said.
"The Premier League is one of the most competitive in the world and whilst we have consistently challenged for honours, the club needs to develop talent and buy top-class players to win the trophies we all crave. This requires greater investment which, I believe, has been lacking thus far.
"What however is not clear is whether the board shares this view. For too long they have seemed happy to sanction second, third and fourth as being acceptable, whilst at the same time they are planning to sell their shares."