Hernandez, the Alaves loanee, will likely face his parent club during the clash this weekend, and Simeone praised the youngster for his progression.
"Theo has grown accordingly with what he had already shown when he came to train with us," said the 46-year-old. "Power, physical strength, changing pace from midfield looking forward. We are happy about what is happening to him."
There was no word on how Atletico might set up on Saturday, but the Argentinian coach said his side "will always compete with the same intensity, across all competitions."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!