"I must admit I've always been a bit ambivalent about the independent doctor thing because I've always been of the opinion that the club doctor knows the player best, but I'm changing my mind," Muratore said on Thursday.

"They're getting me to change my mind because [the clubs] just don't seem to get it, and I don't understand why. Most of the doctors are pretty much on side, but I think they sometimes get pressure put on them. And even though I've always been under the impression that they can withstand the pressure and do the right thing, I'm not too sure now."

Reynolds was brought from the field after he emerged stumbling from a tackle on Roosters forward Aiden Guerra but after passing a SCAT3 test he returned 12 minutes later and ended up setting up the match-winning try.

The halfback's return was questioned by Roosters doctor Ameer Ibrahim, who raised his concerns with Muratore's successor as chief medical officer, Paul Bloomfield, and the NRL is investigating.

Muratore acknowledged he was not at the ground but said he had no doubt Reynolds was concussed. "This guy was hit in the head by a knee ... he gets up, he's ataxic, meaning he's wobbling all over the place ... so there is the diagnosis already," he said. "If the guy has had a decent whack and he's wobbly, he's concussed. If I was looking after [Reynolds] I would have said he's concussed. I'd like to think they'd do something about it."