Liverpool made a late attempt to bolster their defensive options on deadline day, targeting Chelsea right-back Malo Gusto on a loan basis, though the deal ultimately collapsed. According to reports, the Blues were unwilling to sanction anything less than a permanent departure for the 23-year-old France international, leaving Liverpool's pursuit unfulfilled.
Chelsea themselves were active in the market as they sought a replacement for Enzo Fernandez. The west London club made a late approach for Bournemouth midfielder Alex Scott, but the Cherries showed no willingness to part with the player during this transfer window. Chelsea had also seen an earlier approach rebuffed, with Arsenal turning down an enquiry for Spain international Martin Zubimendi, 27.
Elsewhere in the Premier League, Manchester United are reportedly plotting a significant overhaul of their backline next summer, with as many as three new defensive signings under consideration. Sources suggest several current defenders, including England pair Luke Shaw and Harry Maguire, along with Argentina's Lisandro Martinez and Netherlands international Matthijs de Ligt, are effectively being evaluated this season before decisions are made on their long-term futures at Old Trafford.
United teenager Chido Obi is said to be pushing for a loan exit before the window closes in the Netherlands and Denmark on Wednesday, with both countries relevant given his Danish nationality. Feyenoord have emerged as one of the clubs showing interest in taking the young striker on a temporary basis.
Everton's interest in Monaco full-back Jordan Teze reportedly hit a stumbling block after the Ligue 1 club's hierarchy blocked any departure for the Dutch defender, despite the Toffees' efforts to bring him to Goodison Park.
In Italy, AC Milan defender Fikayo Tomori looks set to remain part of Ruben Amorim's plans after resisting the chance to leave the Serie A club, paving the way for his reintegration into the first-team squad.
Back at Anfield, Liverpool forward Cody Gakpo reportedly held discussions with the club's hierarchy aimed at clearing the air following the club's decision to block a proposed move to Manchester City. The talks come after Liverpool refused to sanction the Dutch international's departure to their Premier League rivals.
Away from the top flight, veteran striker Jamie Vardy, still a free agent at 39, is attracting interest from an unlikely source in Wrexham. However, the Welsh club face competition for his signature from Brazilian side Sao Paulo as well as League One outfit Sheffield Wednesday, as Vardy weighs up his next career move following his departure from Leicester City.
Finally, in Saudi Arabia, Al-Ittihad have become the latest club to register interest in Aston Villa winger Leon Bailey. The Jamaica international, 29, is also reportedly a target for fellow Saudi Pro League side Diriyah, adding to speculation about a potential move to the Middle East for the Villa Park attacker.
Based on reporting from BBC Sport, with additional information originally sourced from Fabrice Hawkins, Mirror, Sun, Nice-Matin, Di Marzio, ED, TalkSport and The Athletic.