Eintracht Frankfurt striker Sebastien Haller has left the door open to leaving this summer.
Kicker says West Ham have lodged an enquiry for the centre-forward, while he was also linked with Manchester United last week.
Haller told Frankfurter Rundschau: "I never say that anything is clear.
"Life can always offer new possibilities. One thing is certain: I will never leave the club because I want to leave. I want to succeed with harmony.
"But you can never say what the future offers."
