Franco Mastantuono, a 17-year-old midfielder from River Plate, is close to joining Real Madrid—a move that will surely excite many Argentinians, but could raise concerns for several figures at Valdebebas.

While the final details of the transfer are yet to be finalized, it is reported that the Spanish club could make an investment exceeding $60 million, which would pose a significant threat to other players.

The Big Headache Approaching for Xabi Alonso

For now, Mastantuono remains a player for River Plate, with whom he is expected to play in the Club World Cup, awaiting an official announcement once the tournament concludes.

According to Spanish media, people in Argentina hope that Mastantuono stays until January to finish competing in the Copa Libertadores, though Real Madrid reportedly has no intention of allowing that.

Xabi Alonso believes that this generational talent is nothing less than a starter and expects him to operate on the right wing.

The Basque manager will have to assert his authority to make room for Franco Mastantuono, a move that will directly impact three players currently on the Real Madrid roster.

The Three Players Affected by Franco Mastantuono’s Arrival at Real Madrid

First is Rodrygo, whose starting spot was never guaranteed—and now, Franco makes things even more complicated for him.

Then there's Brahim Díaz, who had become a top-tier impact sub under Ancelotti, but that scenario is now shifting.

Finally, Arda Güler, a player seen as one for the future, had limited minutes last season. With Mastantuono’s arrival, the Turkish player may see even less game time, potentially remaining just a long-term project.

We’ll have to wait and see what Xabi Alonso’s strategy will be, as he’ll have plenty of talent to develop but very limited room to maneuver within his system.