Jose Mourinho has claimed his Roma side "don't have a very good squad" and described the gulf in quality between his first and second-choice players as "huge" following their humiliating 6-1 loss to Bodo/Glimt in the Europa Conference League.
Roma are 9/5 to win their next match against Napoli, who are 29/20 to come out on top with the draw 5/2 in Serie A on Sunday.
Former Chelsea, Manchester United and Tottenham boss Mourinho made nine changes from the weekend clash with Juventus going into the game in northern Norway.
And Roma paid the price, finding themselves 2-0 down after only 20 minutes before Carles Perez pulled a goal back for the Italians.
But rather than work their way back into the contest, Roma capitulated after the interval, with a second goal from Erik Botheim, another brace from Ola Solbakken and a strike from Amahl Pellegrino wrapping up a convincing win for the Norwegians.
The result brought to an end Roma's unbeaten start to the Europa Conference League group stage - they had previously beaten CSKA Sofia and Zorya Luhansk - but also marked the first time in his career that Mourinho had overseen a team conceding six times.
Roma must now turn their attention back to Serie A with a game against league leaders Napoli at the weekend but Mourinho was highly critical of his squad, insisting the second-string side are just not good enough.
Speaking to Sky in Italy, Mourinho said: "We have a very good team - we don't have a very good squad.
"Today we didn't play with the team, we played with the squad, and we were punished by that.
"If I could use the same players every match I would - it's risky because there's a huge gulf between our first choice and second choice players. I expected better but it's my responsibility."