Manchester United made a splash in the final hours of transfer deadline day, bringing in Edinson Cavani and Alex Telles and agreeing a deal with Atalanta for Amad Diallo, while Arsenal spent big on Thomas Partey.
The Premier League giants had been criticised for their lack of activity in the transfer market after only bringing in Donny van de Beek from Ajax ahead of the new season.
A 6-1 humiliation to Tottenham on Sunday seemingly sparked the Old Trafford boardroom into action a day later, though, with the club sealing an eye-catching move for Cavani, who had been unattached after leaving Paris Saint-Germain at the end of last season.
The Uruguay international has signed a one-year deal with the option to extend for another 12 months and joined Telles in the North West after the Brazilian signed from Porto.
Ole Gunnar Solskjaer's side also announced a reported £37million deal for Atalanta's 18-year-old Diallo, who is expected to join in January, and brought in teenage winger Facundo Pellistri from Uruguayan club Penarol for a reported £9 million.
Chris Smalling left the Old Trafford club to sign a permanent deal with Roma after a successful loan spell in the Italian capital last season.
A deal for Barcelona's Ousmane Dembele did not materialise, though, which meant the LaLiga giants were unable to bring in Memphis Depay from Lyon.
Meanwhile, Arsenal secured a £45million deal for Atletico Madrid midfielder Partey after meeting the buyout clause in the Ghanaian's contract.
The 27-year-old made 188 appearances across six seasons for Diego Simeone's side and helped lead Atleti to the Champions League Final in 2016.
The move was confirmed minutes before the transfer deadline passed as Gunners midfielder Lucas Torreira moved in the opposite the direction on a season-long loan.
RAPHINHA HEADS TO LEEDS
Leeds United have added another attacking weapon after signing Brazilian winger Raphinha for a reported £17million.
The 23-year-old starred as French club Rennes finished third in Ligue 1 last season and qualified for the Champions League for the first time.
Raphinha scored five goals in 22 league matches in 2019/20 and added another goal in six games this campaign as Julien Stephan’s side surged to the top of the Ligue 1 table.
The Whites, who have collected seven points from four games since returning to the Premier League, let Polish midfielder Mateusz Bogusz join Spanish second division club RD Logrones on loan.