Stefan Savic has already impressed his new Manchester City teammates while on tour of the USA.
Savic won the approval of his new team-mates - by clattering boss Roberto Mancini in training in Vancouver.
The former Partizan Belgrade defender left the Italian legend hobbling around with his thunderous challenges during their Los Angeles training camp.
Hart told The Sun: "It was awesome, brilliant.
"The gaffer was training and Stefan properly did him, that's a statement of intent. The gaffer took it well."
