Mancini was furious with defeat to Genoa.
"It's difficult to discuss the market now. The lads worked hard, totally changed their approach and mentality. Unfortunately we made many mistakes in decisive games and you pay for those in Serie A.
"The results haven't been what we wanted, but we are on the right track. Inter have improved a great deal as a team in recent months.
"Obviously if we sign more world class players, it'll help the others raise their game and the youngsters to improve."