Alan Smith's return to Elland Road for Lucas Radebe's testimonial has been ruled out amid concerns over security.
Smith, who left Leeds last season, was to be invited to play on 2 May but the organisers decided against it, following discussions with police.
Chairman of the organising committee, David Share, told the Yorkshire Post: "Alan Smith would love to play.
"But it wouldn't be prudent so soon after him moving from Leeds to United to have him involved."
Share added: "He is very disappointed and I would imagine the vast majority of Leeds supporters are disappointed too.
"We are only dealing with a small minority, but it is the decision that has
"We are not able to invite certain players back - it is a fact of life."
Chairman of the Leeds United supporters' club Ray Fell said: "I regret that
decisions like this have to be taken but I can understand why it has been done.
"It is sad that there would perhaps have been a minority who would have given
Alan Smith a hostile reception."