Former Italy coach Arrigo Sacchi says it's clear Inter Milan's players are flagging.

Inter have surrendered the Serie A leadership in recent weeks to city rivals AC Milan.

“He will have to work to recover some players," says Sacchi, referring to Inter coach Simone Inzaghi. "The squad is large, but yesterday I noticed some changes that did not bring benefits.

"(Arturo) Vidal, (Alexis) Sanchez and (Joaquin) Correa seemed bewildered: they play for themselves, not as a function of their teammates.

"In midfield, (Marcelo) Brozovic is subdued and Barella is not performing as he could: consequently the maneuver is slower and the strikers have not served as they would have done."