Jose Mourinho has a real problem on his hands.
His Tottenham side are conceding goals at will and now have a tricky task to qualify for the Champions League.
Only a year ago the club were in the final of Europe's premier competition. However, on Thursday, they were being handed a 3-1 defeat at the hands of Sheffield United.
It was a sorry performance, but not one that didn't come without its controversies.
Harry Kane scored but the ball was somehow adjudged to have come off Lucas Moura's arm in the build-up. Though, there didn't appear to be actually anything wrong with it.
It was a moment of misfortune for Spurs, but that seems to have followed Tottenham around this season.
Since Mourinho walked through the doors in north London, his side have let in a whopping 45 goals. It's hardly a surprise they're aiming to sign defenders in the transfer window.
One area that needs a particular improvement is at right-back.
Serge Augier is reportedly set to be sold and with that in mind, he'll need a replacement.
Thomas Meunier was on their list before he joined Borussia Dortmund, while Timothy Castagne has also been touted with a switch.
Though, another face they're targeting is Norwich defender Max Aarons. That's according to Charlie Eccleshare of the Athletic who suggested Spurs want the 20-year-old to replace Aurier if he departs.
Spurs have been linked in the past but it appears their interest is still there. It's thought the youngster could cost around £30m.
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Clubs like Arsenal have also been keeping an eye on the defender so if Spurs are to get their man, they'll have to move quickly.
Norwich's number 2 would make a superb replacement for Aurier, primarily because of his offensive abilities.
It may be in defence where Spurs need to improve the most but at the age of 20, Aarons has plenty of room to get better in that department.
This term, the Englishman has performed 1.3 dribbles per match, being fouled the same number of times.
He gets up and down the wing in some fashion and has already earned quite the reputation. Speaking on Sky Sports (via the Pink Un), pundit and former full-back Andy Hinchcliffe raved over Aarons and his teammate Jamal Lewis.
He said: "These two have proved they are physically strong enough and are both the perfect build for the modern full-back job, while they also have shown they are mentally strong enough as well.
"They are absolute machines in terms of getting up and down the pitch in terms of athleticism and dynamism. It is not a surprise they are standing out."
If those who haven't watched him aren't aware of his talents, that should be enough to provide plenty of excitement.
Spurs have arguably struggled to replace Kyle Walker since he moved to Manchester City but they may finally have a player capable of doing so by landing Aarons.