The cut is getting stitched and he's still being assessed by medical staff.
He did not warm-up with the team and won't take field for a while, if at all.
Adam Milne has replaced him on the field but cannot bowl.
McClenaghan and Matt Henry helped rescue New Zealand's innings with a 73-run partnership, a record for the ninth wicket against Pakistan.
Anwar slipped over on his previous delivery before sending a short one down. Players rushed to his aid but McClenaghan walked from the field. The bruising was already evident.
Trent Boult edged four from the last ball, leaving Henry 48 not out from 30 balls.
SCOREBOARD
WAGONWHEEL
MANHATTAN