Manchester City manager Manuel Pellegrini was left to rue a couple of decisions from referee Robert Madley following the 2-1 defeat to Everton in the first leg of the League Cup semi-final.
The Chilean claims that the Toffees' first goal, scored by Ramiro Funes Mori, saw Romelu Lukaku offside and that his team deserved a second-half penalty for a foul on Jesus Navas.
He said: "The first goal was offside. He [Lukaku] was in front of Willy Caballero and it is unbelievable that the linesman did not see.
"If you aggregate the clear penalty that we should have had for Jesus Navas - both of these are clear observations that can change the score.
"It was a foul, it was clear – he took the legs of Jesus - it was a clear penalty.
"We didn't deserve to lose in the first half – they scored a goal that was absolutely offside and then we were denied a clear penalty."
City were beaten by Lukaku's 78th-minute header after Navas had cancelled out Funes Mori's opener.