McLachlan has invited all 18 senior coaches to his house for dinner, wanting to have an informal chat about the state of the game.
Melbourne coach Paul Roos and Essendon counterpart Mark Thompson will be among the absentees due to a clash with their regular spot on Fox Footy.
"I don't know how many will turn up. I'm sure there will be a few there and the ones that can make it will make it," Roos said on Friday.
"Certainly there was no pressure (from McLachlan or the AFL) on the ones that had things on."
The meeting comes hot on the heels of the AFL releasing a charter for the Laws of the Game Committee.
Roos has been at the forefront of confusion and discontent over the laws of the game.
"I don't know the rules," he said after a recent loss to Western Bulldogs, adding that he felt for umpires due to the addition of new rules and tweaking of old rules.
"It's an enormously complicated game and they've purposefully overcomplicated it."
Roos said on Friday he had not read the charter that was released the day before.
"What I've learned in 10 years of coaching is you can have some sort of say, but at the end of the day they'll do what they want to do," Roos said.
"When it comes out, you adapt to it.
"That's probably the attitude I adopt now - whatever happens, happens and we'll just adjust."
Thompson said coaches were responsible to try and win, and that fans were more interested in premiership points than pretty games of football.
"It would be great if you could win and play the best-looking football you could possibly play," Thompson said.
"But that's not always the case. It shouldn't be the total responsibility of just the coaches."
