Fred (£53m)
"A team without a Brazilian is not a team", said Manchester United manager Jose Mourinho while being asked about his transfer plans and looking back he certainly has lived up to his words. Fred is United's only major signing this season. His versatility and work-rate might prove to be crucial in his partnership with Paul Pogba and Nemanja Matić in the midfield. Arriving from Shakhtar Donetsk, he would love to justify his price tag by proving his doubters wrong.
Jorginho (£51m)
For the most parts of the transfer season, Jorginho was linked with a move to Manchester City though, in the end, he decided to join his old boss Maurizio Sarri at Chelsea. He was instrumental to Sarri's system in Napoli and it would be interesting to see how he integrates with his new teammates.
Fabinho (£40m)
It's the same story every year for AS Monaco. Another one of Monaco's young prospects sold at a hefty price. He can be the answer to Liverpool's defensive woes as his versatility to play as a defensive midfielder and right back gives options to Jürgen Klopp. His partnership with Nabi Keita in the midfield would dictate the season for Liverpool.
Richarlison (£35m)
Just after a season at Watford, Richarlison has switched clubs again. The price tag might have raised a few eyebrows but his exponential growth in recent years cannot be ignored. As a left winger who can also play as a target man, he is going to be the player that defines Everton's season this year. However, it remains to be seen how he integrates into the rejuvenated Merseyside club.