The 22-year-old winger from Ivory Coast had already established himself as a crucial player for United, and he delivered in the most dramatic of fashion.
Man United have been promising with their performances over a few weeks and will hope to avoid any upset when they host the Saints at Old Trafford this time.
According to FIFA, 2019 marked a record year for global transfer spending, with clubs investing a staggering $7.35 billion (£5.6bn/$8.15bn) in player acquisitions.
Arsenal striker Gabriel Jesus was carried off on a stretcher during the first half of the FA Cup match against Manchester United on Sunday.
Bayindir was United's savior by saving one penalty from Martin Odegaard in normal time to send the game against Arsenal to extra time at 1-1 and then another from Kai Havertz in the shootout.
Madrid entered the match hoping to bounce back from a 4-0 loss to Barcelona in October's La Liga Clasico. However, Barcelona dominated in Jeddah, leaving their arch-rivals frustrated.
United kept their title defence alive as they beat Arsenal 5-3 in penalties despite being a man down for almost 60 minutes
Flick's squad has improved in terms of fitness in the new year, with Araujo and Andreas Christensen now available, but they are still missing long-term absentee Marc-Andre ter Stegen.
Abdukodir Khusanov is set to move to defending Premier League champions Manchester City as they have agreed a deal with Lens for the transfer of the centre back.
Reported Manchester City target Omar Marmoush boosted his transfer value with another goal for Eintracht Frankfurt to beat St. Pauli 1-0 in the Bundesliga.
There have been many influential transfers during this short period of transfers that have often gone on to decide league titles or Champions League triumphs as well.
Messi's new contract aims to give him the flexibility to join a European club on loan, maintaining his fitness ahead of Argentina's World Cup title defense in 2026.
While some high-profile names like Marcus Rashford and Kvaratskhelia are in the spotlight, clubs are also trying to fill the gaps left by injuries or poor form.
Diallo, who scored a late equalizer in a 2-2 draw with league leader Liverpool on Sunday, has been rewarded for his impressive form this season.
Spain's government stepped in Wednesday to provisionally allow midfielder Dani Olmo and forward Pau Vctor to continue playing for Barcelona following the Spanish league's refusal to do so.
Lamine Yamal and Gavi Pez scored to lead Barcelona past Athletic Bilbao 2-0 and into the Spanish Super Cup final on Wednesday.
The 18-year-old Bergvall slotted home the winner in the 86th minute following a pass from Dominic Solanke, who thought 10 minutes earlier that he had given Tottenham the lead.
Son's deal, which he signed in 2021, was due to expire at the end of the season
France coach Didier Deschamps plans to announce on Wednesday that he won't continue in the role after the next World Cup, according to reports in French media.
Goals from Alexander Isak and Anthony Gordon at the Emirates Stadium put Newcastle within reach of the final at Wembley Stadium in March. The second leg is at St James' Park on Feb. 5