Arsenal Supporters' Trust have been given assurances by Danny Fiszman over his long-term future at the club.
Usmanov is joint-owner of Red and White Holdings, and the Trust have requested a meeting with the Russian where they plan to "remind him of the responsibility his position now holds".
Former Gunners vice-chairman Dein is now chairman of Red and White.
Usmanov said in the Moscow Times: "Regardless of the size of my stake, I am ready to play an active role in the life of the club."
Should Red and White or anybody else eventually look to launch a takeover, Fiszman's 24.1% stake is seen as the key.
The club's largest shareholder has previously stated that he would not sell before April 2008 and he has given indications he wants to stay beyond that date.
Trust chief Tim Payton said: "The Arsenal Supporters' Trust (AST) welcomed Danny Fiszman's reassurances that he intends to continue with Arsenal.
"He said he intends to spend more time with the club in the years ahead. His message was that it was a lot longer term than the lockdown."
Payton confirmed the Trust have requested a meeting with Usmanov.
"We would like to meet Usmanov and we will remind him of the responsibility his position now holds," he said.
"Arsenal is about its history and its supporters. Any action by him must recognise this."
Payton added: "The AST has already told Red and White that we expect them to work with, not against the Arsenal board, whose work we greatly respect. A hostile bid is not welcome."
