With one selection meeting remaining this afternoon, here is the 37-man squad that we think is close to being named.
There are reportedly still a few big decisions left to be made with Warren Gatland still considering the inclusion of England captain Dylan Hartley.
Despite a poor Six Nations, reports suggest no fewer than 10 Welshman will be included while only three Scots will travel.
The Telegraph has even suggested today that Jonny Gray could potentially miss out, which would leave Tommy Seymour and Stuart Hogg to fly the Scottish flag.
Using reports from reliable sources such as The Rugby Paper, The Telegraph and ESPN, we have put together the squad that could possibly be named tomorrow. This is not our favoured squad (NOT AT ALL).
Props: Jack McGrath (Ireland), Mako Vunipola (England), Joe Marler (England), Dan Cole (England), Tadhg Furlong (Ireland), Kyle Sinckler (England)
Hookers: Rory Best (Ireland), Jamie George (England), Ken Owens (Wales)
Locks: Alun Wyn Jones (Wales), Maro Itoje (England), Jonny Gray (Scotland), Courtney Lawes (England), George Kruis (England)
Flankers: CJ Stander (Ireland), Justin Tipuric (Wales), Sam Warburton (Wales), Sean O’Brien (Ireland), Peter O’Mahony (Ireland)
Number 8s: Billy Vunipola (England), Taulupe Faletau (Wales)
Scrum-halves: Conor Murray (Ireland), Rhys Webb (Wales), Ben Youngs (England)
Fly-halves: Johnny Sexton (Ireland), Owen Farrell (England), Dan Biggar (Wales)
Centres: Robbie Henshaw (Ireland), Jonathan Davies (Wales), Ben Te’o (England), Elliot Daly (England)
Wingers: George North (Wales), Liam Williams (Wales), Tommy Seymour (Scotland), Jack Nowell (England)
Fullbacks: Stuart Hogg (Scotland), Anthony Watson (England)