England wing Jack Nowell has been fined £10,000 for criticising referee Karl Dickson in a tweet during Exeter Chiefs' hammering at Leicester Tigers last Sunday.

Dickson sent Olly Woodburn off and awarded a penalty try for his tackle on Chris Ashton as the flyer attempted to finish in the corner.

Nowell made his feelings about that decision crystal clear as he was forced to watch on as a spectator rather than play at Welford Road.

He posted on social media: "I'm actually in shock, like shock shocked. What the hell is happening? That's one of the worst decisions I've ever seen. EVER."

Nowell later deleted his post, but found himself in front of an independent disciplinary panel on Wednesday, charged with committing conduct prejudicial to the interests of the game.

He accepted his conduct was prejudicial and was fined £10,000, while he was also directed to undertake a referees' course. 

World Rugby confirmed that Dickson had correctly applied the law.

England hooker Luke Cowan-Dickie could miss the Six Nations after suffering an ankle injury.

The 29-year-old will definitely be sidelined when the Red Rose start the tournament against Scotland at Twickenham on February 4.

Cowan-Dickie sustained the injury during the second half of Exeter Chiefs' win against Northampton Saints on Saturday after scoring two tries.

Exeter director of rugby Rob Baxter told BBC Radio Devon on Tuesday: "Luke's injury looks relatively serious.

"He's seeing a surgeon today; that will maybe give us a more definitive outcome and timing."

Baxter is optimistic British and Irish Lion Baxter can still play a big part for the Chiefs before joining Montpellier at the end of the season.

He added: "It does look like an operation is going to be required but that said, at this stage, it wouldn't be a season-ending situation.

"We could still see him back for a good chunk of the season if rehab and everything goes well."

Luke Cowan-Dickie will end his England career after the Rugby World Cup next year by joining Top 14 heavyweights Montpellier.

The hooker, who has won 42 England caps and three for the British and Irish Lions, will end his 12-year spell with Exeter Chiefs to move to France at the end of the season.

Cowan-Dickie follows his Exeter team-mate Sam Simmonds in making the switch from Sandy Park to Montpellier.

"It's gutting to be leaving," said the 29-year-old, who has made 163 appearances for the Chiefs.

"I've been at the Chiefs for 12 years and it's all I've known. That said, this opportunity came up and it was one that I had to think long and hard about. I spoke a lot with my family about it and it wasn't an easy decision to make in the end.

"Obviously, it's a different competition, a different language – which I'll have to learn – but I think it's time for a change.

"Hopefully, I've still got plenty of years left in my career, but this is an opportunity for me to go over there and show what I am all about."

Fellow England international Joe Marchant has also joined the exodus of Premiership players to France, the centre opting to join Stade Francais next season from Harlequins.