Amad Diallo has warned Manchester United not to make a "huge mistake" with his former club Atalanta in the Champions League.
United will welcome the Serie A outfit to Old Trafford on Wednesday night looking to secure a victory to leapfrog their opponents at the top of the Group F standings.
Amad could be in line for a place in Ole Gunnar Solskjaer's squad given his first-hand knowledge of Atalanta, and he has briefed his team-mates on what to expect from his former club.
The 19-year-old, who completed a £37 million ($51m) move to United from Atalanta in January, told MUTV: "First of all, we must not underestimate Atalanta.
"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. They press high, they don't let you play and they put you in difficulty.
