Coughlan has been playing with the Richmond VFL team Coburg after his trip to Germany for treatment in May, and is still a chance to play senior football this year.
"It's a wait and see – he's played now a couple of games, two or three games, in a row," Wallace said of the 2003 best and fairest winner. "He's performed better in each of those games.
"He's probably done it more on courage and head-over-the-ball stuff than ability to run and spread and create, which is the next level of footy.
"Realistically he's still a bit off the mark at the moment, but two or three weeks of continuity in footy, you don't know."
And while Polak has been home for a few hours to watch the footy, he hasn't been into the club, although Wallace expects that to happen soon.
"No, not as yet. I think he's just continuing on with his rehabilitation.
"I would think within the next fortnight that rehabilitation will be conducted down at the footy club."
