Liverpool teammate Steven Gerrard after claiming the midfielder "did nothing for his country".
The ex-Senegal international, whose dire spell at Anfield saw him score just six goals in 80 appearances, has history with Gerrard stretching back to 2007 when the Reds skipper criticised him in his autobiography.
Diouf has since launched regular attacks, with his latest claiming he is "bigger" than his former captain.
"I have no problem with him. He is a strong character and I am a strong character," the 36-year-old told the BBC.
"'Stevie G was a very good player.