There are just 11 days remaining of the January transfer window for managers to bolster their squads for the second half of the season.
Runaway leaders Liverpool added Takumi Minamino to their roster at the beginning of the month, while Tottneham recently moved for Gedson Fernandes.
However, Manchester United, Arsenal, Chelsea, Leicester and Manchester City are yet to bring in any new faces as they fight it out for the remaining spots in the top four.
At the other end of the table, Aston Villa have signed Danny Drinkwater and Pepe Reina, but Dean Smith still needs cover up front after record signing Wesley Morales was ruled out for the rest of the season.
But which club needs to strengthen the most? Our reporters have their say:
John Cross - Man Utd
Without doubt, Manchester United. A striker, two midfielders, defender and a wide player. The squad is so thin it’s frightening.
Yes, they’re missing Pogba, Rashford and McTominay. But how did it come to this? It’s crazy!
The squad is shocking, huge wage bill and transfer fees. Been badly managed. But last thing they need is an overpriced buy they didn’t want at the start of the window.
That’s got disaster - and let’s do over Man United again - written all over it. They’ve got about ten of those buys already.
David McDonnell - Man Utd and Tottenham
Ask any Premier League manager and they would love to be able to add to their squad this month, but perhaps the clubs most in need of strengthening are Manchester United and Totteham, both of whom have lost their star strikers to injury.
United will be without Marcus Rashford for up to three months, while Spurs may not see Harry Kane again this season.
Against that backdrop, both need to bring in a goalscorer this month. It's asking too much of Mason Greenwood, at 18, to shoulder the goalscoring burden for United, while Anthony Martial is not consistent enough.
Spurs are in a similar position, with no-one able to fill the void left by Kane, in terms of his goal output, while United also need to sign a creative midfielder capable of scoring and creating, with Paul Pogba and Scott McTominay both currently sidelined.
Bruno Fernandes is that man, but a move for him to United currently seems a long way off.
Mike Walters - Arsenal and Tottenham
Look no further than north London for the spiritual home of the Premier League's great under-achievers this season.
Both Tottenham and Arsenal kicked off the campaign with high hopes of a top-four finish - and both appear to have been suffering from delusions of grandeur.
Mauricio Pochettino and Unai Emery lost their jobs for sluggish starts - the moribund side of sluggish, that is - and their successors Jose Mourinho and Mikel Arteta will expect backing in the market before this window closes.
For Mourinho, the biggest gap to plug is obvious - a decent replacement for crocked England captain Harry Kane.
And for Arteta, the Gunners' soft centre remains a glaring defect: A commanding, pacy centre back and a holding midfield player of real substance, in the Patrick Vieira mould, would be useful for starters.
Unless Spurs and Arsenal make meaningful investments before the end of the month, they can both kiss goodbye to Champions League football next season.
Tom Hopkinson - Norwich, Aston Villa and Bournemouth
By default, Norwich, Aston Villa and Bournemouth all need to do the strongest work this month because without a couple of signings at least to freshen them up they’re all heading down.
At the other end of the table, Leicester, Wolves and Sheffield United would perhaps benefit from a good addition as well as they chase a European finish, something Crystal Palace might just be looking at as well.
But the traditional big six? I wouldn’t waste too much money if I were them. The title is heading to Liverpool no matter who any of them sign and they all have enough quality at their disposal already to finish in the top six if they could just get their acts together.
David Anderson - Man Utd
There are several clubs who need to do big business this month if they can, from Everton to Tottenham and Bournemouth to Arsenal.
But I think Manchester United are in greatest need.
Sunday’s loss to bitter rivals Liverpool, who will soon be firmly back on their perch as England’s No 1 club, cast a spotlight on their many deficiencies.
Of course injuries do not help and they were missing the likes of Paul Pogba (although is he much of a loss, given how little he has done this season?), Marcus Rashford and Scott McTominay.
Yet the fact that so much is being made of McTominay’s absence says it all about how far United have fallen.
Put bluntly, United need a new midfield. Ole Gunnar Solskjaer wants Bruno Fernandes, but Manchester United are haggling over Sporting Lisbon’s £68million pricetag.
Fernandes would be a first step towards solving their problems, but they need much, much more.
United have needed a striker since the summer and Rashford’s back injury has increased their desperation.
Solskjaer has admitted United may go for a short-term option and they need someone to score the goals to get them into the top four.
That would be a major success for United, given all their problems.
It would also buy Solskjaer more time in his attempt to turn United around, although that huge task may prove to be beyond him.
James Whaling - Man City
For a club with so much capital at their disposal, there is no way Manchester City should be 16 points off the title pace, having played a game more than runaway Premier League leaders Liverpool.
Yes, the Reds have been incredible, but make no mistake about it - whatever he says in the press - this season will be stinging Pep Guardiola.
Their defensive deficiencies were shown up once again on Saturday as they conceded a late leveller against Crystal Palace, despite battling back from 1-0 down.
Aymeric Laporte's absence has been more damaging than Pep or City could have ever imagined, but their decision not to sign a centre-half before the season was odd.
With over half of the January transfer window having passed they are still to address the issue, even though Laporte is nearing full fitness.
The only way City can rescue this campaign is to win the Champions League. Even both domestic cups would surely be seen as an underachievement given the talent at the Etihad.
And the biggest stumbling block to prevent that from happening, outside of Merseyside, is their own backline. Pep must surely strengthen it between now and the end of the month.