Manchester United are eyeing emerging River Plate star Franco Mastantuono. The Red Devils also have their sights on FC Porto goalkeeper Diogo Costa, while facing competition from Manchester City. Meanwhile, there are numerous transfer rumors circulating around the world of football.

• Arsenal is in talks for Sporting CP striker Viktor Gyökeres, and Ipswich Town's Liam Delap is an option for them.
• Florian Wirtz prefers a move to Manchester City if leaving Bayer Leverkusen.
• Chelsea's obligation to sign Jadon Sancho has been triggered, but they may pay a penalty to send him back.

And more transfer rumors from various clubs and players.