But El Diego insists that he will not change his line-up.....
Argentina take on Germany in the World Cup quarter-finals on Saturday afternoon in what will be a rematch at the same stage four years ago. It is expected to be a thrilling and closely contested encounter but doubts on Lionel Messi's participation emerged on Thursday when it was revealed that the 23-year-old was suffering from cold.
However, Maradona insists that he will field the Barcelona forward against Germany.
"I never had any doubts about the participation of Messi [against Germany], but I am a little worried about him," Maradona told reporters at the pre-match press conference on Friday evening. "I will not change the team. I respect everyone, but I fear no one.
"I feel very good. I think tomorrow we will play a great game and qualify for the next round."
When asked about whether Argentina and Germany had benefited from bad refereeing decisions, the 1986 World Cup winner said, "England won the World Cup in 1966 with a goal that wasn't a goal."
However, El Diego added, "The referee in the Spain-Portugal game was horrible. Without technology, we will see the same errors repeated that we saw during England-Germany."