Charlie Ngatai will have to sit out this weekend's Super Rugby clash for the Chiefs up against the Melbourne Rebels.
Coming off a bye week, Ngatai has had extra time to recover from the head knock he took in the loss to the Highlanders back in Round 11.
However the in-form centre hasn't fully cleared the concussion protocols and will be forced to sit out in Hamilton.
"He still had symptoms this morning [Tuesday], they were pretty minor, but it counts him out," Chiefs head coach Dave Rennie revealed to Stuff.
Rennie and his players have had some extra time to stew over their off-colour performance in that Highlanders defeat, when the Chiefs' usual slick handling was absent.
An intense review session followed and captain Sam Cane feels like the squad are in a better place for it after airing their grievances.
"If you look at it closely, there's numerous little things – I won't say what they are – but at this level small margins make a big difference," Cane said.
"So if we get back to doing some of those really small things well that give other guys a little bit more space, a little bit more opportunity, hopefully we'll get back on track."
His coach was even more bullish, stressing that the Chiefs' seven-game winning run earlier in the season was proof of just how good they can be at taking their chances when they come.
"It hasn't dented our confidence, we know we're capable of beating anyone."