The 22-year-old dislocated his shoulder in the defeat by Sale on 21 December, with Chiefs coach Rob Baxter warning at the time the injury was "not ideal for ourselves or for England".

Baxter says the winger has surgery booked in for early next week, should he decide to undergo the procedure.

If Feyi-Waboso does have an operation he will miss all of the Six Nations, whereas if he opts not to have surgery, he could potentially participate in the final part of the tournament.

"It's an ongoing process at the moment involving Manny, our medical team and the England medical team," Baxter told BBC Radio Devon.

"The shoulder isn't going to rehab for the full Six Nations campaign. England go off into camp in not very long.

"He's barely started his rehab process really as the to-ing and fro-ing over whether he has his rehab is slowing both options down - it's slowing the operation process and the rehab process.

"The big thing at the minute is the decision will be made. It can go one way or the other and that will give him a clear reference point for what he is aiming for. Is it the end of the England Six Nations campaign? Or is it post-Six Nations, getting ready for a big end to the season that will help him drive his claim for the Lions if that's a possibility?"

Forwards: Gareth Thomas, Nicky Smith, Kemsley Mathias, Keiron Assiratti, Henry Thomas, WillGriff John, Elliot Dee, Evan Lloyd, Sam Parry, Dafydd Jenkins, Will Rowlands, Freddie Thomas, Christ Tshiunza, Teddy Williams, James Botham, Aaron Wainwright, Taulupe Faletau, Jac Morgan (capt), Tommy Reffell.

Backs: Tomos Williams, Ellis Bevan, Rhodri Williams, Ben Thomas, Dan Edwards, Eddie James, Nick Tompkins, Joe Roberts, Owen Watkin, Tom Rogers, Josh Hathaway, Ellis Mee, Blair Murray, Josh Adams, Liam Williams

Forwards: Fin Baxter (Harlequins), Ollie Chessum (Leicester), Alex Coles (Northampton), Luke Cowan-Dickie (Sale), Chandler Cunningham-South (Harlequins), Ben Curry (Sale), Tom Curry (Sale), Theo Dan (Saracens), Alex Dombrandt (Harlequins), Ben Earl (Saracens), Ellis Genge (Bristol), Jamie George (Saracens), Joe Heyes (Leicester), Ted Hill (Bath), Maro Itoje (Saracens), George Martin (Leicester), Asher Opoku-Fordjour (Sale), Bevan Rodd (Sale), Will Stuart (Bath), Tom Willis (Saracens).

Backs: Oscar Beard (Harlequins), Elliot Daly (Saracens), Fraser Dingwall (Northampton), George Ford (Sale), Tommy Freeman (Northampton), Ollie Lawrence (Bath), Alex Mitchell (Northampton), Cadan Murley (Harlequins), Harry Randall (Bristol), Tom Roebuck (Sale), Henry Slade (Exeter), Ollie Sleightholme (Northampton), Fin Smith (Northampton), Marcus Smith (Harlequins), Freddie Steward (Leicester), Jack van Poortvliet (Leicester).

Forwards: Ewan Ashman (Edinburgh), Josh Bayliss (Bath), Jamie Bhatti (Glasgow), Gregor Brown (Glasgow), Dave Cherry (Edinburgh), Luke Crosbie (Edinburgh), Scott Cummings (Glasgow), Rory Darge (Glasgow), Jack Dempsey (Glasgow), Matt Fagerson (Glasgow), Zander Fagerson (Glasgow), Grant Gilchrist (Edinburgh), Jonny Gray (Bordeaux), Patrick Harrison (Edinburgh), Will Hurd (Leicester), Jack Mann (Glasgow), D'Arcy Rae (Edinburgh), Dylan Richardson (Sale), Jamie Ritchie (Edinburgh), Pierre Schoeman (Edinburgh), Rory Sutherland (Glasgow), Marshall Sykes (Edinburgh).

Backs: Fergus Burke (Saracens), Matt Currie (Edinburgh), Jamie Dobie (Glasgow), Darcy Graham (Edinburgh), George Horne (Glasgow), Rory Hutchinson (Northampton), Huw Jones (Glasgow), Tom Jordan (Glasgow), Blair Kinghorn (Toulouse), Stafford McDowall (Glasgow), Finn Russell (Bath), Kyle Rowe (Glasgow), Sione Tuipulotu (Glasgow), Duhan van der Merwe (Edinburgh), Ben White (Toulon)

Forwards (21): Ryan Baird (Leinster), Finlay Bealham (Connacht), Tadhg Beirne (Munster), Jack Boyle (Leinster), Thomas Clarkson (Leinster), Jack Conan (Leinster) Caelan Doris (Leinster, capt), Tadhg Furlong (Leinster), Cian Healy (Leinster), Iain Henderson (Ulster), Rob Herring (Ulster), Cormac Izuchukwu (Ulster), Ronan Kelleher (Leinster), Gus McCarthy (Leinster), Joe McCarthy (Leinster), Peter O'Mahony (Munster), Andrew Porter (Leinster), Cian Prendergast (Connacht), James Ryan (Leinster), Dan Sheehan (Leinster), Josh van der Flier (Leinster)

Backs (15): Bundee Aki (Connacht), Caolin Blade (Connacht), Jack Crowley (Munster), Ciaran Frawley (Leinster), Jamison Gibson-Park (Leinster), Mack Hansen (Connacht), Robbie Henshaw (Leinster), Hugo Keenan (Leinster), James Lowe (Leinster), Conor Murray (Munster), Calvin Nash (Munster), Jimmy O'Brien (Leinster), Jamie Osborne (Leinster), Sam Prendergast (Leinster), Garry Ringrose (Leinster)

Development players: Hugh Cooney (Leinster), Cathal Forde (Connacht), James McNabney (Ulster), Ben Murphy (Connacht)

Esteban Abadie, Dorian Aldegheri, Gregory Alldritt, Uini Atonio, Hugo Auradou, Cyril Baille, Giorgi Beria, Paul Boudehent, Joshua Brennan, Georges-Henri Colombe, Francois Cros, Thibaud Flament, Marko Gazzotti, Jean-Baptiste Gros, Matthias Halagahu, Oscar Jegou, Anthony Jelonch, Maxime Lamothe, Julien Marchand, Peato Mauvaka, Emmanuel Meafou, Dany Priso, Rabah Slimani, Romain Taofifenua

Theo Attissogbe, Pierre-Louis Barassi, Leo Barre, Louis Bielle-Biarrey, Nicolas Depoortere, Gael Drean, Antoine Dupont, Antoine Frisch, Emilien Gailleton, Mattieu Jalibert, Nolann Le Garrec, Maxime Lucu, Yoram Moefana, Noah Nene, Romain Ntamack, Damian Penaud, Thomas Ramos, Gabin Villiere

The trial was in place for the Autumn Nations Cup in November and has been extended to this year's men's, women's and Under-20s Championships.

Lawmakers say the 20-minute red card is designed to "punish the player and not the team", with sides able to replace a dismissed player after 20 minutes.

The men's Six Nations starts on Friday, 31 January with France hosting Wales in Paris.

While referees are still able to award a full and permanent red card for "deliberate and dangerous acts of foul play", the 20-minute red card constitutes a major change to rugby union's disciplinary process.

Meanwhile, the release of the fixtures for the 2026 Championship has been pushed back as discussions continue over a new broadcast deal, with the current tie-up with BBC and ITV expiring this year.

Conversations are ongoing with broadcasters as the Six Nations and its unions balance up the extensive reach of free-to-air partners with the revenues they can offer, with sources close to the situation stressing all options are being explored.

A revamped fixture schedule, with more evening kick-offs, is on the table with the Six Nations prepared to adapt to the preferences of broadcasters.

A "Super Saturday" taking place every weekend of the men's Championship has also been discussed, while Six Nations bosses are also keen to limit overlaps with other key sporting events.

From next year, the tournament will be cut from seven weeks to six weeks, with just one rest week rather than two.

This will probably result in a block of three games at the start of the Championship, then a break week before the tournament concludes on back-to-back weekends at the start of March.