A depleted England line-up worries All Black assistant coach Ian Foster.
The back end of the Northern Hemisphere's domestic season is causing selection headaches for England, who travel to New Zealand to meet the All Blacks in a three-test series next month.
The tourists will likely be under-manned for the first test at Eden Park in Auckland on June 7.
"I think that makes them very dangerous," Foster said.
"I know if we had 10 players that couldn't play in that first game the players we put in there would be playing for their lives. So let's make no mistake, that first week's going to be a massive week because there's going to be guys in there in the English jersey that are going to be desperate to play very, very well for their own future."