Inter Milan boss Antonio Conte was frustrated after their preseason defeat to Manchester United.
The Nerazzurri opened their International Champions Cup campaign in Singapore with a 1-0 reverse.
“The positives I saw were in the effort and eagerness of the players, but there is a great deal to be improved in possession and when pressing," warned Conte in his press conference.
“These lads have a positive spirit, which is important in a moment of pre-season that is not easy, because we're coming off some very intensive training sessions."
Conte is unhappy at the tight schedule of the International Champions Cup, as they'll play Juventus on Wednesday in Nanjing.
“We need to work on everything, there is very limited time to recover from this match. We don't just need to play games, but also train to better understand the various moments of the match."