Atalanta BC boss Edoardo Reja has said that is he wary of the threat posed by Sassuolo ahead of tomorrow's match.
The Neroverdi have won their first two matches of the season while Atalanta have picked up a win and a draw.
Reja praised Eusebio Di Francesco and his side for the work they have done since gaining promotion to Serie A.
"Sassuolo will not be underestimated, due to the work they have done in recent years," Reja is quoted as saying by Gazzetta World.
"They have a proven team, with a very good technician.
"They made some big investments, especially in some young Italians, and it is a policy that is paying off."
Atalanta face Sassuolo at 2pm tomorrow.