The Bergamo-based club have established themselves as one of Serie A's top sides in recent seasons and currently lead Group F after drawing at Villarreal and beating Young Boys.
They were on the brink of reaching the Champions League semi-finals in 2020, before two dramatic late goals by Paris Saint-Germain, and reached the round of 16 last season before succumbing to Real Madrid.
"First of all, we must not underestimate Atalanta," warned Amad, in an interview with club media. "If you underestimate Atalanta, you are making a huge mistake.
“They have got a great coach, a great team and they have got good fans.