Former Liverpool midfielder Dietmar Hamann has told Talksport he has no sympathy for Mamadou Sakho after the defender tested positive for a banned substance.
The BBC reported on Wednesday that Sakho will not contest the results of his failed test, which is said to have contained traces of a type of fat burner.
The Frenchman has been one of Liverpool's key playes this season, appearing 34 times in all competitions, but is not expected to feature again in 2015-16.
The Reds have already suspended Sakho pending a UEFA investigation and a lengthy ban awaits.
The 27-year-old's team-mate Kolo Toure was handed a six-month suspension after testing positive for a weight-loss drug in 2011, but Hamann says the same punishment for Sakho would be too lenient given that footballers warned "hundreds of times" and "on a daily basis" about taking such supplements.
"I don’t think they should let him off with a minimum ban because he failed a drugs test - it’s his fault," the German told The Colin Murray Show on Wednesday. "As a player you are warned on a daily basis, almost. The doctor tells you: 'if you do take anything let us know because it could be eye drops, it could be nasal spray, there could be something in it which is banned'.
"I’ve got no sympathy for the guy and if he were to get two years I don’t think you could argue with it."
And Hamann is worried that a six-month ban would set a dangerous precedent for others going forward.
He added: "If they let him off with six months now, does it set an example for the rest of them for the future?
"If you’ve got these rules you’ve got to punish the people because unless the punishment is severe, somebody else might say, you know what, I’ll take it on the chin because in six months’ time I’m back."
Hamann isn't the only ex-Liverpool player to criticise Sakho this week, with Jamie Carragher telling Sky Sports the centre-back had "let himself and the club down badly".
Jurgen Klopp's side face Villarreal in the Europa League quarter-finals this week, with a Champions League place at stake for the competition winner.