West Ham are fighting to keep hold of Javier Hernandez this month.
The Mirror says Hernandez has agreed personal terms with Valencia - but he is unlikely to seal an escape from West Ham this month.
The Mexico international joined the Hammers in July 2017 for £16million from Bayer Leverkusen.
But the former Manchester United striker is believed to want a move having struggled to settle in east London, with a return of just 14 goals in 55 appearances.
Hernandez is thought to be keen to revive his career in LaLiga, where he spent a spell on loan at Real Madrid five years ago.