AS Roma boss Rudi Garcia was angered by their 2-0 friendly defeat to Inter Milan.
Nemanja Vidic and Yuto Nagatomo gave Inter a 2-0 victory over Roma that keeps their International Champions Cup hopes alive.
Centre-back Leandro Castan crumpled to the ground clutching his hamstring and was carried off the field in the opening stages.
"The really bad news is Castan's injury. It is a problem and we hope it isn't too serious. We have a month before the start of the season, but a muscular injury can be a lengthy one.
"Apart from that, the games show we still have a lot to work on. It was good to face up to these important opponents.
"Everyone could've done better today and we should've moved the ball around much faster. We had too many touches, making our play predictable and easy to read.
"We played against a well-organised Inter side and never managed to catch them out of position. This must act as a real warning for the team. It's a friendly, fine, but when we are in a competitive match we cannot play like this.
"There was almost nothing positive. It's a very long road before we can be ready for the start of the season."
