The Frenchman was a regular scorer during his time with Real Sociedad, but has netted just once for Atletico this season after joining the Spanish champions in the summer.
"He played well. He had great pace and was very mobile," Simeone told AS following his side's 2-0 win over Espanyol on Sunday.
"Griezmann went between the lines to give us something different and went close to scoring.
"With the intensity he had today and the way he played the other day, he'll create chances. We need goals from Griezmann and he's working on it."