Williams lasted just 36 minutes when the All Blacks beat England 16-15 at Twickenham, with an AC joint injury removing him from play.
“There’s a pretty good chance he’ll be right for Italy so he’ll stay but Ngani is coming over to make sure if we lose someone this week we’ve got someone,” All Blacks coach Steve Hansen said.
Williams has struggled with fitness this year, appearing in just five Super Rugby matches and five tests while battling through a slew of wrist, knee and shoulder injuries.
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