Eintracht Frankfurt great Charly Korbel admits there's supporter disappointment with Sebastien Haller.
The striker left Eintracht Frankfurt for West Ham yesterday for a club record fee - just weeks after declaring he intended to stay.
Korbel told BILD: "In my time I also remember professionals who disappointed the fans. Lajos Detari has promised to stay after the 1988 Cup victory ... Three weeks later he was gone! Sure, the fans are scared now. Especially because of Haller. I myself have said: 'You may sell all except him!'
"And I appreciate Haller as a clean, honest guy. When he said his words, he believed in them. But when the money actually comes into play and you can earn double, triple, you just have to do it."