According to him, although the former Sunderland striker is a fantastic player, he is also very lazy in training.
The Frenchman is familiar with Gyan, having worked as the Black Stars’ physical coach during the 2008 Africa Cup of Nations.
Renard has since moved on to achieve bigger things, winning the AFCON with both Zambia and Cote d’Ivoire.
Discussing Gyan’s prospects with TV3’s Juliet Bawuah, he said the striker was always lazy in training when they worked together.
According to the 51-year-old, Gyan could have had a better football career if he eschewed his laziness.
“The quality of Asamoah Gyan was amazing. I was always impressed with his timing of headers,” Renard said, as he shared a smile.
“He was a very good goalscorer, fantastic player, amazing player.
“But I have something to tell him. He was supposed to have a better career, but he was lazy.”
He added: “In training, he was lazy. He only likes the games. But he was the most important player but I know him and he didn’t like the training, he only likes the competition, the games.”
Gyan is Ghana’s all-time top scorer with 51 goals and has been one of the country’s best players in the last decade and half.
Meanwhile, Renard is currently the coach of the Saudi Arabia national team.