Tottenham boss Harry Redknapp has labelled FIFA president Sepp Blatter "idiotic" and "out of touch" for his comments about racism.
Blatter has come under fire over the past three days after claiming in two television interviews that racism on the pitch could be settled with a post-match handshake.
The 75-year-old Swiss yesterday attempted to draw a line under the controversy by issuing an apology, but insisted he would not resign.
Redknapp said: "Of course what he has said is idiotic and he is clearly out of touch with reality.
"But as well as that, I'd like to know where he came from in the first place. I mean, what were his credentials to become president of FIFA in the first place? Football's like this sometimes.
"What is his background in football to make the biggest decisions that affect our game? It's beyond me."
Blatter gained a degree in business administration and economics at Lausanne University and was a board member at Swiss club Neuchatel Xamax before joining FIFA as technical director in 1975.
Redknapp added: "Not everyone likes (UEFA president) Michel Platini but at least everyone appreciates he knows his stuff about football. He was a great player so the people who pay to go through the turnstiles accept he knows what he is talking about.
"Maybe if Blatter had been like Bobby Charlton or a great manager like Alex Ferguson, you would have more respect for his opinion.
"There are lots of great people in England and abroad who could run FIFA and who have a great background in football."
Blatter said: "When you have done something which was absolutely not totally correct, I can only say I am sorry for all those people affected by my declarations."
Blatter now says any players found guilty of racism on the pitch should be thrown out of the game.
"Zero tolerance," he said. "This was a good lesson for me as well. It should be and it shall be zero tolerance."