Manchester United have decided to let Sergio Reguilon return to Tottenham after the conclusion of his brief loan spell. The Spanish left-back arrived at Old Trafford in the last transfer window due to injuries to Luke Shaw and Tyrell Malacia. However, it didn’t work out.Shaw encountered an extended absence, missing over three months due to a muscle injury between August and November. Malacia has yet to feature this season following knee surgery. Despite these setbacks, Reguilon struggled to make a significant impact at Old Trafford, making just 12 appearances across all competitions. Diego Dalot often filled in on the left side of the defence, and other players like Sofyan Amrabat and Victor Lindelof also saw time in that position.Reguilon was initially a backup choice for United after a late temporary deal for Chelsea’s Marc Cucurella fell through on the previous deadline day. Meanwhile, Malacia is nearing a return from injury after a challenging period.🚨⚪️ Man United have activated break clause for Sergio Reguilón who’s set to return to Tottenham, as called by @David_Ornstein.Mutual decision made between all parties as Reguilón wants to play and there’s no more space at United.Player side informed by #MUFC today. pic.twitter.com/jjFkTud504— Fabrizio Romano (@FabrizioRomano) January 2, 2024 During his time at United, Reguilon started seven games for Erik ten Hag’s team, with his final appearance in the disappointing 3-0 home defeat against Bournemouth in December. Despite a short spell out with a hamstring injury, he was generally available for selection during a broader injury crisis for the team.His return to Spurs sees him facing a decreased role recently, having fallen down the pecking order. While he initially made a strong impression in north London after joining Real Madrid in 2020, the 27-year-old has not played for his parent club since the 2021/22 campaign and spent the previous season on loan with Atletico Madrid. Although he has earned six caps for Spain, his last international appearance was in 2021, raising questions about his role in manager Ange Postecoglou’s plans.##NAJAVA_MECA_7775495##At Tottenham, first-choice left-back Destiny Udogie has been enjoying a stellar season, while Emerson Royal has deputized when needed. Other options, such as Ivan Perisic and Ryan Sessegnon, have been sidelined due to long-term injuries, although Sessegnon might return soon.Manchester United have faced several defensive challenges recently, with key players like Harry Maguire, Victor Lindelof, Lisandro Martinez, and Shaw absent in recent matches. However, manager Ten Hag remains hopeful of having some players back from injury at some point this month. United’s upcoming fixtures include an FA Cup tie against Wigan next Monday, followed by a clash with Tottenham on 14 January.