Maurizio Sarri has revealed that he was happy with his striker, Alvaro Morata after the prayer helped Chelsea to a 3-1 win over Crystal Palace on Sunday.
He, however, urged the striker to continue improving his game.
Although the Spaniard bagged a brace in the game, he squandered a superb chance to complete his hat-trick with the last kick of the game.
The former Real Madrid forward has now scored four goals in four Premier League appearances.
Sarri was impressed with his forward’s performance, but suggested Morata was mentally ‘fragile’.
He told the BBC, “I am really very happy for Alvaro. He improved in the last month in confidence and personality.
“He improved also from a tactical and technical point of view. He plays with more continuity from the team.
“He has great potential physically and technically. He can improve more. Potentially he can be (a top striker at a top club). Sometimes he is a little bit fragile.”
On why he introduced Eden Hazard in the second half, Sarri added, “We were a little bit in trouble so we needed some quality and personalty,’ he said.
“We were lucky because we had Eden [Hazard] on the bench. He was able to immediately change the match.
“From the first day, Manchester City and Liverpool are at the moment a step ahead of us. When I arrive the gap from last season as 30 points with City.”