Ngatai still suffering from concussion symptoms

One test All Blacks centre Charlie Ngatai is still suffering from concussion symptoms with no timetable set for his return, Waikato Chiefs coach Dave Rennie said on Tuesday.

"He's had a few setbacks over the last period of time and there's a bit of light at the end of the tunnel, but we're not going to rush that," Rennie said.

"What tends to happen if you push things a little bit too much you go backwards a bit. So it’s been a frustrating time for him."

The 26-year-old has been sidelined since last May when he suffered a head knock in the Chiefs Super Rugby match against the Otago Highlanders.