AFL PLAYERS' Association chief executive Brendon Gale has expressed concern at the Sydney Swans' decision to hand club psychologist Grant Brecht the task of deciding if and when Barry Hall is fit to return to football.

The Swans full-forward was suspended for one week for an attempted strike on Collingwood defender Shane Wakelin last Saturday night, and subsequently suspended indefinitely by the club. It was Hall's third game back from a seven-week suspension for striking West Coast's Brent Staker.

"It appears that he'll be re-selected at the arbitrary decision-making of a psychologist," Gale told Melbourne's Herald Sun Newspaper.

"By what standard? By what measurement?

"If he's fit, willing and able to play and available for selection, you'd think Barry Hall on his merits and on form would be selected. I'm concerned about the indefinite nature of it."

Wakelin, a former teammate of Hall's at St Kilda, has also expressed concern for the troubled forward.

"I genuinely feel concerned for Baz," Wakelin told the newspaper.

"He used to be a great team mate of mine but obviously he's going through some personal troubles.

"I have a lot of respect for him… but I guess if it wasn't for my reflexes, I might have been in a very similar situation to Brent Staker.

"That is the way the Sydney psychologist has seen it, Paul Roos has seen it."

Wakelin said that Hall had apologised for his actions after the game.

"I shook his hand and wished him all the best.

"He apologised and I said 'Don't worry about it'. It is obviously something he has got to work through."