Search starts for new FA Cup sponsor
"The FA can confirm E.ON's sponsorship of the FA Cup will come to a close at the end of the season," an FA spokesman said in a statement on Wednesday.
"We are now looking forward to taking the FA Cup sponsorship opportunity to the open market for the 2010-14 period."
The energy giant's four-year contract with the FA was worth 32 million pounds.
The FA is also still looking to finalise a TV deal for the FA Cup following the demise of the Setanta television company.