Fulham boss Martin Jol could face action from the PFA over his penalty fine.
The Sun says Jol faces a dressing-room mutiny over his decision to fine a rookie player £500 for missing a spot-kick..
Barnes said: "I will bring it up with Brede. I've never heard of anything like this before and it could set a dangerous precedent..
"Managers issue instructions before games but players will make decisions during a match..
"What if a player is supposed to stand in the wall at a free-kick and then ducks out of the way of the ball?.
"If the opposition score would he be punished too?"