Italian journalist Lorenzo Lepore reports that Wolfsburg have been watching Valentin throughout this season and are prepared to submit an offer of between €300,000 and €500,000.
MTK Budapest are holding out for at least €1 million, citing the recent transfer of fellow 16-year-old Andrej Vasiljevic to Hamburg SV for €2.5 million as a benchmark for Hungarian teenage talent.
That gap between offer and asking price is the central obstacle, though the volume of interest from established European clubs suggests Valentin's departure is a matter of when rather than if.
VfL Wolfsburg have positioned themselves as a credible destination for young central European talent in recent windows, with a track record of integrating academy-level signings into their development pathway before senior exposure. The club's presence at the front of the queue for Valentin reflects a deliberate strategy of acting early on targets before competition intensifies.
Benfica's involvement is significant. The Portuguese club have a long and successful record of developing central midfielders from across Europe and have used their academy system as a pathway to some of the continent's most lucrative subsequent transfers.
Club Bruges represent a third option offering regular senior football in a competitive league.
MTK Budapest will be reluctant to sell below what they consider fair value, particularly given how sharply the reference point has shifted with the Vasiljevic deal. Whether Wolfsburg are prepared to close the gap or whether a competing club bids closer to the asking price will likely determine where Valentin plays his football next season.
Lepore reports that direct contact has already been made between Wolfsburg and Valentin's representatives, suggesting the Lower Saxony club are moving beyond initial scouting into active negotiation.