Premiership side Wasps have signed World Cup-winning scrum-half Piri Weepu and full-back Martyn Thomas as injury cover for the rest of the season.

New Zealand international Weepu, 31, who has signed to play in France for Oyonnax next season, has been released from his one-year contract with London Welsh.

Thomas, 21, was formerly with Newport Gwent Dragons and Gloucester.

Blackburn Rovers defender Shane Duffy will miss the remainder of the season after undergoing knee surgery.

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The 23-year-old Republic of Ireland international, who injured himself training on Thursday, last featured in Blackburn's 4-1 FA Cup fifth-round win over Stoke.

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Chelsea are set to challenge Manchester United for the signature of Southampton and England right-back Nathaniel Clyne, according to the Daily Mirror, external.

Managerless Coventry City have signed Brentford striker Nick Proschwitz on loan for the rest of the season.

Despite Steven Pressley's sacking on Monday, the Sky Blues have pressed ahead with a deal for the 28-year-old German that had already been lined up.

"We're delighted to bring in a player we've been tracking at this club for a long time," said joint caretaker manager Neil MacFarlane.

Gloucester's Henry Trinder will undergo surgery after being ruled out for the rest of the season after suffering a serious knee injury.

The 25-year-old centre made his first start since September at the weekend, but was stretchered off the field after only nine minutes.

Celtic have been charged on two counts of improper conduct by European governing body Uefa following their Europa League defeat by Inter Milan.

They relate to the setting off of fireworks by supporters - and the team's on-field discipline.

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Celtic received seven yellow cards, including two for defender Virgil van Dijk, who was sent off during their 1-0 last-16 loss in the San Siro Stadium.

The charges will be heard by Uefa on 19 March.

The Football League has met with representatives from Ernst & Young, the receivers of the parent company that owns Championship club Birmingham City.

Birmingham International Holdings Limited went into receivership earlier this month.

In a statement,, external the League said it had received confirmation that "no funding will be withdrawn from Birmingham City" and "sufficient funds are available to ensure that the club can complete the 2014-15 season."

It also said the receivers did not believe their appointment in Hong Kong should be considered as an "insolvency event" under Football League regulations, which could lead to a deduction of 10 points.

Andy Murray's defeat by Borna Coric in the Dubai Championships had more to do with him wanting to prepare for the Davis Cup, according to Andre Agassi.

Britain's Murray, 27, was beaten 6-1 6-3 by the 18-year-old Croatian on Thursday.

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American Agassi told BBC Sport the Scot wanted to be "preparing for what he probably is really valuing - that is the Davis Cup".

Murray has been named in Great Britain's squad to face the United States in Glasgow from 6-8 March.

Defending IBF super bantam weight world champion Carl Frampton meets challenger Chris Avalos in the ring on Saturday.

But it appears the weigh-in, held earlier today in Belfast, got a little heated.

Here's what Frampton tweeted...

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Followed by...

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Cardiff City manager Russell Slade is confident of owner Vincent Tan's continued commitment to the Bluebirds.

The club's latest accounts reveal the Welsh club are £174m in debt, more than £120m of which is owed to Tan.

They also show Cardiff lost £12m during their Premier League campaign which ended with relegation to the Championship last summer.

Slade said: "The figures are staggering - the amount of money and support he has given to the football club. Do I see that changing? No, I do not. But I can understand why he wants it run more conservatively, on a more sound financial basis."

Kilmarnock defender Mark Connolly has been ruled out for the rest of the season after breaking his collarbone during the 3-3 draw with Inverness Caledonian Thistle on Saturday.

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In case you hadn't noticed, it's Friday!!! I have heard staying in is the new going out, so get your quizzing heads ready for the Formula 1 special this evening.

Image source, @QuestionofSport

Oh and watch out for our very own Suzi Perry and McLaren's very own Kevin Magnussen getting way too into the Sprint Finish...

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Fifa president says the 2022 World Cup will be over before Christmas.

Does this mean no Boxing Day football? ("Sad face")

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Manor Marussia have been named on a 10-team Formula 1 entry list on Friday, subject to conditions that included full compliance with the 2015 technical regulations.

The list, which does not include the failed Caterham team, said the revived Manor Marussia F1 team would compete with Ferrari engines.

Marussia, who have clawed their way back from the brink of oblivion, have named Britain's Will Stevens as one of their drivers. However, the governing FIA said that was subject to him holding a super licence.

Connor Braid will now be staying with Glasgow Warriors until the end of the season.

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The 24-year-old Canadian back was due to return to London Scottish following the conclusion of his loan spell, but - with Duncan Weir out injured and Finn Russell and Peter Horne on duty with Scotland - the Warriors have agreed a deal to keep him at Scotstoun.

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Right back to the news conferences and Roberto Martinez has commented briefly on being drawn against Dynamo Kiev in the last 16 of the Europa League. "It is what we expected - a tough draw. But we leave it to the side for now and our focus is on Arsenal. We know Dynamo Kiev will be tough opponents. We would have preferred to be away first, but that's not in our control.".

Everton travel to The Emirates this weekend, with both teams having played midweek European ties. Martinez doesn't think "Arsenal will let the midweek game affect them. We need to make sure we are fit and ready for an exciting game. John Stones and Aaron Lennon will return, but the squad will otherwise be the same" (as the team that beat BSC Young Boys).

A bit of Pat Nevin football analysis for you to peruse on your lunch break:

This week, he looks at the way Harry Kane has achieved success in front of goal this season, and asks if the Tottenham striker will be a one-season wonder.

Greg Rutherford has withdrawn from the Great Britain and Northern Ireland team for the European Athletics Indoor Championships in Prague, which starts on 5 March.

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The Olympic, European and Commonwealth champion was set to compete in the long jump following his win and indoor personal best performance at the Sainsbury's Indoor Grand Prix last weekend.

But he has now decided to concentrate on the outdoor season ahead.

"My body still hasn't fully recovered from the Grand Prix and with an incredibly important summer coming up I've decided to keep my focus purely on the summer season," Rutherford said.

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Soon to retire AP McCoy says he's "very, very, very unlikely" to quit the saddle at jump racing's Cheltenham Festival next month, even if he were to land one of the major prizes.

He has said wants to line up in the Grand National at Aintree on April 11 where favourite Shutthefrontdoor is his likely mount. So we think we can expect to see a few more races yet.

In case you were wondering, you can read all of the day's horse racing results here.

BBC Sport's Simon Stone at the Manchester United news conference: "The 'rat race' Louis van Gaal confirmed Manchester United are in for a top four place is not what was envisaged when the Dutchman splashed out £150m on new players last summer.

"But money is no guarantee of success, so now the scrap is on with Arsenal, Southampton, Liverpool and Tottenham for those coveted Champions League slots, two of which are already taken by Chelsea and Manchester City.

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"Van Gaal has admitted it would be a massive disappointment to fail, yet he does not appear overly concerned about the situation. He is pleased with results, if not many of United's performances and "would sign" for a top four place at the beginning of May if it was offered.

"Indeed, his biggest gripe this lunchtime was the insinuation that he had said United had achieved the best results over the last 15 games - they have - when his contention is that the media have said it in their questions, he has merely agreed."