The Mexican striker will fly to London to undergo a medical ahead of his return to the Premier League
Former Manchester United striker Javier Hernandez will sign for West Ham from Bayer Leverkusen subject to a medical, the two clubs have announced.
The 29-year-old Mexico international moved to Leverkusen from Old Trafford, following a season on loan at Real Madrid, in August 2015.
He scored 39 goals in 76 competitive games for the Bundesliga side and will bolster Slaven Bilic's attacking options, with the West Ham boss having already signed Joe Hart on a season-long loan along with the England goalkeeper's former Manchester City team-mate Pablo Zabaleta.