Andrea Berta, soon to be Arsenal's sporting director, had a mixed bag at Atlético Madrid. His best signings include Jan Oblak for £13m in 2014, a world-class goalkeeper, and Antoine Griezmann, a key player over the past decade. Rodri, signed for £24m, later won the Ballon d’Or with Man City, and Luis Suarez at £5.5m was a steal in 2020. On the flip side, Berta's £828m spent over eight years included some flops—his last window brought in Julian Alvarez and Conor Gallagher, but not all transfers clicked. Expect a sharp eye for talent at Arsenal, but maybe a few head-scratchers too.