Chelsea are among the clubs keen on West Ham's Mohammed Kudus.
Kudus has an £85million clause for Premier League clubs, active for the first 10 days of July.
The Blues also continue to appreciate Jamie Gittens of Borussia Dortmund, Hugo Ekitike at Frankfurt and Brighton's Joao Pedro. A bid for Gittens is expected to go in this week.
The latter is also on lists at Newcastle United and Arsenal.
Chelsea have also spoken to AC Milan over goalkeeper Mike Maignan who could leave for just £25m this month.
The 29-year old has one year left on contract and Chelsea could offload Djordje Petrovic who has interest from West Ham.
Enzo Maresca's side are set to sign Liam Delap from Ipswich after triggering the £30m release clause and agreeing personal terms.
They have also announced the arrival of Sporting Lisbon's Dario Essugo for £18.5 after the two clubs reached an agreement in March.
Chelsea will be hoping to add to their squad ahead of the Club World Cup.
The Blues begin their campaign against Los Angeles FC on June 16 before matches against Flamengo and ES Tunis.
Deyacikosu
22
eish,seems as if Chelsea buys 11 players every transfer window and we don't see most of them on the field..hmmm and then next window they try sell some they bought last window 🤣🤣🤣 just confusing
Fahbcdmnu
18
What the do we need this guy for ??? we need a tough striker, a tough defender and a tough goal keeper as well. Chelsea no see osimhen buy na kudus.
bamadiloty
13
Chelsea wanna have a new team every season, sell 14 players then buy 20 🤣🤣