If I was to go around asking Brentford supporters about the club's transfer business last month, 'disappointing' would be the general consensus.
A squad that was in need of strengthening at the start of the window is now thinner than before as the club sanctioned the departures of multiple players on loan without replacement.
Brentford's joint-second top scorer this season Marcus Forss made the switch to Hull City on deadline day, leaving Thomas Frank with one recognised first team centre-forward, two wingers, and Nathan Young-Coombes to fill the two forward positions.
The defence was an area in need of reinforcement, but instead the options have dropped to six to fill five positions, unless a formation change is afoot. Charlie Goode and Dominic Thompson joined Sheffield United and Ipswich Town, respectively, until the end of the season.
Thompson's departure left many Brentford fans confused, particularly because he showed he could be a capable deputy for Rico Henry after his Man of the Match performance in the 1-0 defeat to Manchester City in December.
While it's understandable that consistent game time is important for his development, the Bees are left with one recognised left-back as well as Sergi Canós, Lewis Gordon, who isn't quite at the required standard yet, and, in a worst case scenario, Mads Bech Sørensen.
Joel Valencia was at last offloaded by the club, for the time being, as he joined Alcorcón on loan. Luka Racic (HB Køge) also left on loan while Patrik Gunnarsson made a permanent switch to Viking FK after spending the first half of the season with the Norwegian club.
One of the better decisions of the window was to allow Mads Bidstrup join Nordsjælland on loan.
The 20-year-old has showcased his quality when given the chance by Frank, particularly in the FA Cup against Port Vale, but with Josh Dasilva soon to make a comeback and the arrival of another Danish midfielder, minutes will be limited in the coming months.
If he can get consistent game time back in his homeland, there's no doubt he could be relied upon more often next season.
The most frustrating aspect was the club's inability to sign a first team right-back for the second consecutive window.
Canós started the season strong in an unfamiliar role but his performances have tailed off in recent months so an upgrade in the position was a necessity.
Everything was set for the promising Vanderson to move to west London from Grêmio at the start of the month, but with his last-minute decision to join Monaco and summer target Hugo Siquet joining Freiburg, it was as if club had given up and turned their attention back towards Brennan Johnson and Keane Lewis-Potter - to no avail, once again, with multiple unsuccessful bids.
Mads Roerslev has proven to be better defensively than Canós but is not of Premier League standard yet. Fin Stevens has been in the picture this season, making his league debut against Southampton, but it's too early rely on him. The same goes for Daniel Oyegoke, who is on the radar of the first team and has featured in behind closed doors friendlies.
The lack of improvement in this area could see teams exploit it more in the remaining games of the season unless Franks opts with Kristoffer Ajer on the right of a back four.
However, credit where credit's due, Brentford able to sign arguably the biggest name in the club's history in Christian Eriksen, who put pen to paper on a six-month contract.
Brentford have been in desperate need of creativity from midfield this season, and the arrival of the 29-year-old could prove to be season-defining. It's a low risk, potentially high reward signing and should he get back into his rhythm, he could propel the Bees up the table.
Jonas Lössl was the club's other first team arrival, joining on loan from Midtjylland with a purchase option at the end of the season. The club was also able to secure the futures of Pontus Jansson (2023), Bryan Mbeumo (2026), Christian Nørgaard (2025), head coach Thomas Frank (2025), and assistant manager Brian Riemer (2025), which is huge.
It has been a busy transfer window for Brentford B which has seen a number of key players move on to pastures new.
Joe Adams and Nathan Shepperd both made the switch to the Republic of Ireland to team up at Dundalk FC. Jan Žambůrek departed to club to join Viborg FF on a permanent deal while Lachlan Brook re-joined his former club Adelaide United on loan until the end of the campaign in search of more first team exposure.
In terms of arrivals, Brentford waited until deadline day to add to the squad, announcing the signing of Needham Market centre-forward Hans Mpongo on a six-month deal with the option of a further year after a successful trial with the club.
The 18-year-old adds needed depth and competition to the position that has been held by Young-Coombes this season.
His arrival was soon followed by the announcement of Deji Sotona on loan from OGC Nice, a deal that includes a purchase option that can be activated in the summer.
The winger, formerly of Manchester United before he moved to the south of France in September 2020, will be reunited with former team-mates Max Haygarth and Ben Hockenhull as he aims to kickstart his development after a challenging time across the channel.
Sotona looks to be an exciting signing as he is a technically-gifted forward that is a powerful runner with or without the ball. Ryan Trevitt has done well to fill in for Adams but Sotona will be hot on his heels to be in Neil MacFarlane's starting line-up.
Overall, I go back to the word 'disappointing' to describe Brentford's January transfer window.
Not much can be said to evaluate the B team's business as there were no glaring issues and the turnover is natural as players progress.
However, the first team the signing of Eriksen, albeit momentous, is the equivalent of putting a plaster over a crack in the wall that is the squad's inefficiencies.
Quality in depth was an issue in the first half of the campaign but now there's not even depth in important positions. If Toney or Henry were to get injured, there's no recognised alternatives to deputise which could have a negative impact on the club's fight for survival.