Paris Saint-Germain have placed a £145 million valuation on France forward Bradley Barcola, with both Arsenal and Liverpool monitoring the 23-year-old.
Real Madrid have reportedly set an asking price of €160 million (£137 million) for Brazil winger Vinicius Jr, although Arsenal are yet to open formal talks for the 26-year-old.
Arsenal would be prepared to offer Vinicius the most lucrative contract in the club's history if they pursue a deal.
Despite the speculation, Vinicius' priority remains signing a new contract with Real Madrid, where he has one year remaining on his current deal.
Arsenal are also expected to step up negotiations for Newcastle United midfielder Bruno Guimaraes, 28.
The Brazil international has reportedly instructed his representatives to resolve his future within the next week before returning for Newcastle's pre-season training camp.
Tottenham Hotspur have emerged as the frontrunners to sign Manchester City winger Savinho, 22.
Real Madrid have agreed personal terms with RB Leipzig's 19-year-old Ivory Coast winger Yan Diomande.
Al-Hilal have opened talks with Everton over the signing of Senegal winger Iliman Ndiaye, 26.
Chelsea will demand a substantial transfer fee for Portugal winger Pedro Neto, 26, amid interest from Liverpool, Manchester City, and clubs in Saudi Arabia.
Besiktas are awaiting a decision from Egypt forward Mohamed Salah, 34, after submitting their final contract offer. Salah is currently a free agent following his departure from Liverpool.
Bournemouth have no intention of selling 20-year-old French striker Junior Kroupi, despite reported interest from Barcelona.
Fulham are the leading contenders to sign Argentina midfielder Franco Mastantuono, 18, should Real Madrid decide to loan the youngster out next season.
Juventus are working on a deal to sign Manchester United striker Joshua Zirkzee, 25.
Portugal midfielder Joao Palhinha, 31, wants to remain at Bayern Munich and fight for his place, although the German champions are willing to sell him.
Middlesbrough are interested in signing Manchester United goalkeeper Radek Vitek, 22, after the Czech shot-stopper spent last season on loan at Bristol City.
Bolton Wanderers, Millwall, Wrexham, and Middlesbrough are all keen to sign Ipswich Town's 22-year-old Dutch goalkeeper Kayne van Oevelen on loan.
Wrexham and Stoke City have joined the race for Crystal Palace full-back Danny Imray, 22, after his successful loan spell at West Bromwich Albion, who are also hoping to bring him back.
West Brom and Southampton have both agreed deals with Ligue 2 side Rodez AF for French right-back Nolan Galves, with the 22-year-old now set to decide his next destination.
Blackburn Rovers goalkeeper Balazs Toth could leave the club this summer after rejecting a new contract. The 28-year-old has one year remaining on his current deal, and Blackburn are reluctant to lose the Hungarian on a free transfer next year.
West Ham United have rejected an approach from Brentford for Senegal left-back El Hadji Malick Diouf, insisting the 21-year-old is not for sale.
Bologna goalkeeper Federico Ravaglia, 26, and Udinese midfielder Martin Payero, 27, were both in attendance at Watford's pre-season friendly against Hansa Rostock as they edge closer to proposed moves to Vicarage Road.
Cardiff City have reached an agreement with Arsenal over the transfer of highly-rated 16-year-old midfielder Axel Donczew, with the Welsh youngster set to complete his move to the Gunners this week.
