But the biggest single move of the final day of deal-making was midfielder Thomas Partey making a 45 million pound ($58.46 million) switch from Atletico Madrid to Arsenal.
United signed Cavani on a free transfer, Brazilian left-back Alex Telles from Porto, Uruguayan 18-year-old winger Facundo Pellistri and reached an agreement to sign Atalanta’s teenage winger Amad Diallo.
European champions Bayern signed right back Bouna Sarr from Olympique de Marseille and brought back Brazilian winger Douglas Costa on loan from Juventus.
Arsenal met the 45 million pound ($58.40 million) release clause for the 27-year-old Ghana international Partey who should add some steel to their midfield. Arsenal’s Uruguay midfielder Lucas Torreira moved in the opposite direction on loan.
United’s 6-1 thrashing at home by Tottenham Hotspur on Sunday has increased the pressure on chief executive Ed Woodward to give manager Ole Gunnar Solskjaer some new options. Attacking full back Telles and experienced former PSG forward Cavani now join Netherlands midfielder Donny van de Beek, who moved to United from Ajax last month.
Cavani was a free agent after leaving Paris St Germain and said he was looking forward to the challenge at Old Trafford.
“I look forward to continuing to write my little story inside the book of football and I know that’s why my focus has to remain the same as always – work, work, work. I have had a conversation with the manager and this has increased my desire to wear this beautiful shirt,” he said.
Solskjaer said he was hoping Cavani could add to the team’s firepower.