Armstrong is represented by Pro-Legal, an organisation with ties to PFA Scotland, run by Glasgow lawyer Liam O’Donnell.
The Hoops gaffer said: “This is a simple deal that should have been sorted out before the end of last season.
“Now it’s dragged on and on and on way too long for what, with all due respect, is a simple deal. Christ, it’s not a big multi multi-million pound deal.
“I read a headline about the board sorting it out. This isn’t just solely the board.
“There has been an offer there for a long time now which is a really, really good offer.
“But if representatives feel there are maybe other options for him and we haven’t had an offer and they want to wait and wait and wait to see what happens, then okay, that’s what you do.
“But the player suffers.
“It’s not the boy, it’s not him.”
Asked if Armstrong did have to shoulder some of the responsibility for the saga, Rodgers replied:
“Absolutely, but if you’re paying someone to make decisions for you and who’ll gain their commission from it, then, of course, that’s what you look towards.
“It is something that could and should have been done a long time ago.
“I have a feeling it might go to the very end of the transfer window.
“In Stuart’s situation, I would love for him to have it resolved, but, unfortunately, it doesn’t look as if that will be in the immediate future.
“I can reassure the supporters that, for me, this is a player who does want to be here. He genuinely does. I feel that.
“Six months ago it should have been organised, sorted and done.
“That’s one of the frustrations of this for me because it’s such a simple deal.”
— Celtic TV (@CelticTV) August 16, 2017
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