Alun Wyn Jones is the frontrunner to be unveiled as British and Irish Lions captain to take on South Africa when Warren Gatland names his squad on Thursday lunchtime.
Jones is expected to follow his success as Wales' triumphant Six Nations skipper by becoming the latest second row to lead the Lions against the Springboks, following in the footsteps of Paul O'Connell, Martin Johnson, Bill Beaumont and Willie John McBride.
The game's most capped player with 157 Test appearances is a clear favourite for the role with England's Maro Itoje, also a lock, his closest rival. Owen Farrell, Stuart Hogg and Ken Owens are fringe candidates.
His absence would open up a vacancy at fly-half, possibly for Finn Russell of Scotland with Wales' Dan Biggar expected to tour and Farrell likely to travel as a centre.
Marcus Smith has been shredding defences for Harlequins this season and the uncapped 22-year-old is among an extended group of over 50 players to have been notified that they are under consideration.
It would be a seismic call for Smith to be included among the 36, however, given he has yet to make his England debut.
Harlequins' mid-season resurgence has propelled Danny Care into contention at scrum-half three years after the 34-year-old veteran of 84 England caps fell out of favour under Eddie Jones.
Care has formed the Gallagher Premiership's most creative half-back partnership alongside Smith and he could profit from Ben Youngs ruling himself out of consideration.
England's disappointing fifth-placed finish in the Six Nations means they could challenge the record low of eight supplied in 2009 for their smallest Lions contingent with Billy Vunipola, Elliot Daly and Jonny May possible casualties.
But a player consistently overlooked by England since 2018 is Sam Simmonds, the explosive Exeter number eight who has a strong chance of travelling to South Africa as a bolter, despite operating in a ferociously competitive position.
