West Ham United are reportedly expecting significant interest in big-money striker Taty Castellanos during the upcoming January transfer window.
According to Football League World and El Intransigente, South American giants River Plate are plotting a move for the Argentine who has represented his country on two occasions.
The report credits Los Millonarios of having held long-term interest in the frontman, who had previously starred for New York City and Serie A giants Lazio prior to his move to the London Stadium at the turn of the year.
The striker joined the Hammers for a fee of around £26 million last January as they battled to preserve their Premier League status, but despite netting seven times across the second half of the 2025/26 campaign he was unable to help the Londoners beat the drop.
Castellanos signalled his intentions of helping fire the club back to the top-flight during the summer but has subsequently endured difficulties in acclimatising to the rigours of the Championship.
The 28-year-old has scored just once in 12 outings in the second-tier, against Wrexham two months ago, and was dropped by new boss Scott Parker at Blackburn Rovers on Saturday after being hauled off at half-time of the former England international's first match in charge against Cardiff City three days earlier.
Parker is expecting to sanction a number of high-profile departures in the new year as he looks to put his own stamp on the his squad, with Castellanos being one of those who could be made available for transfer.
Reputable Argentinean-based sports media agency El Intransigente claim River Plate boss Leonardo Ponzio has made the West Ham man his 'top January transfer target', although his salary and the club's valuation could provide the 38-time domestic champions a significant hurdle.
It's also understood a number of clubs in Europe are also keeping tabs on developments including La Liga rivals Sevilla and Real Betis.
