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Ahead of Wednesday’s Champions League game against Chelsea, Porto boss Sergio Conceicao has described himself as never 100 per cent happy.
He also insists he always wants to win irrespective of the opposition.
“I am never 100 per cent happy. There is a dark side inside me, and it will never leave,” he told Tribuna Expresso via Goal.
“Success is about rigour, discipline, some non-conformity. Some people think it is normal to win every now and then, but I am different. I always have to win.
“I have always been like that – competitive and uncompromising, even with my friends and my family. I am very honest and forthright. It irritates me when people are not honest.”