Arsenal believe they are acquiring one of the world's best holding midfielders in Martin Zubimendi and they are not the only ones.
A £31.4m fee for an 18-year-old with only a season of senior football behind him may seem high-risk from the outside but those who have worked with Charalampos Kostoulas see it differently.
Arsenal are yet to complete the striker signing many supporters crave but progress is being made on other areas of the squad as they agree a fee to sign Christian Norgaard from Brentford.
Arsenal are considering a move for Benjamin Sesko this summer but what makes the RB Leipzig striker so appealing?
Having already signed Jeremie Frimpong from Bayer Leverkusen to replace Trent Alexander-Arnold at right-back, Liverpool have now sealed a deal for a new left-back in Milos Kerkez.
As the final whistle sounded and Spurs players sprinted in all directions, unsure where to go or what to do, Ange Postecoglou kept his cool, embracing his staff, walking over to shake Ruben Amorim's hand, then quietly joining the celebrations.
It is 17 years since Tottenham last claimed silverware but Rodrigo Bentancur knows the feeling well. He reached double figures for trophies with Boca Juniors and Juventus. Now he hopes his experience will help Spurs over the line in the Europa League.
Liverpool will lose Trent Alexander-Arnold on a free transfer at the end of the season with the England defender now set to continue his career at Real Madrid.
This week's Europa League tie between Manchester United and Athletic Club was an opportunity for Andoni Iraola to cast his mind back to their last meeting, when he captained his former side to a famous quarter-final victory under Marcelo Bielsa in 2012.
Few would have believed it earlier this season, when there were questions around the wisdom of signing him, but Mikel Merino faces Paris Saint-Germain this week as one of the most important players to Arsenal's hopes of reaching the Champions League final.
Real Madrid did everything they could to unsettle Bukayo Saka.
"Remontada," said Jude Bellingham with a smile.
The Radar column ponders Mohamed Salah's longevity and explains why Brentford, not Arsenal, are the Premier League's set-piece pioneers.
Martin Odegaard put his hands to his head in disbelief. Thibaut Courtois watched on his knees. Declan Rice was wheeling away in celebration - again. He had never previously scored a direct free-kick. Now he had two in 12 minutes. Against Real Madrid.
A decade on, it is difficult to imagine a player of only 16 being paraded in front of television cameras and asked to give a 15-minute press conference in front of the world's media but that was the reality for Martin Odegaard arriving at Real Madrid in 2015.