Javier Hernandez has refused to commit his future to West Ham after the arrival of new manager Manuel Pellegrini.
Hernandez signed a three-year Hammers contract last summer as he completed a £16million move from Bundesliga outfit Bayer Leverkusen.
But the 29-year-old striker lost his first team place towards the end of the season when he was sparingly used by former boss David Moyes, and it has been widely reported that he could leave the Premier League club this summer.
"Of course I am a West Ham player still, but we'll see," Hernandez replied when asked about his future at a press conference in Los Angeles ahead of Mexico's friendly against Wales on Tuesday morning.
"Right now what can I tell you? I'm glad there's a new manager? I'm sad there's a new manager?
"It's not the moment to speak about this. My mind is 100 per cent on the World Cup."
Asked if Pellegrini - who led Manchester City to a Premier League and Capital One Cup double in 2014 - was a good appointment by West Ham, Hernandez replied: "I don't know."