England will start the defence of their Six Nations Championship title away to Italy in February.
Taulupe Faletau would have no problems moving to No 6 if it means lining up alongside his cousin Billy Vunipola for the Lions.
Warren Gatland says the Lions plan to lose between six and 10 players from the original 41-man squad to tour New Zealand.
Wales international Richard Hibbard says he will "never be bitter or unhappy" if his Test career has reached its conclusion.
England have been drawn with France and Argentina in Pool C for the 2019 Rugby World Cup in Japan.
Miles Harrison continues his countdown to the 2017 Lions tour with a player each day from his list of the 50 greatest Lions.
Jamie Roberts has been named Wales captain for the summer Tests against Tonga and Samoa.
England will be hoping to escape inclusion in another pool of death when the 2019 World Cup draw is made on Wednesday.
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