And, on the back of Thursday's 5-0 Europa League thrashing of Dynamo Kiev, Sarri wants more consistency in up front.
Chelsea took a 3-0 first-leg lead into the match in Kiev and added an away goal inside of five minutes when Giroud pounced on a Ruben Loftus-Cheek header following a corner and redirected it past Denys Boyko for the opener.
The Italians are now second in Serie A to Juventus and have already shown their pedigree this season by beating Liverpool and drawing twice against Paris Saint-Germain in this season's Champions League group stages. "Making that step up is very hard and he showed that he can score goals from that position with his pace".
"I thought he was terrific", Walker said.
Against Ukrainian club Dynamo Kyiv, Olivier Giroud scored hat-trick and the 2018 World Cup victor has now scored nine goals in nine European games this season.
"No. No chance. I'm a competitor", Giroud said, per The Sun.
Loftus-Cheek could be one of Europe's best - Sarri
Manchester United face Wolves in the quarter-finals so the Blues have an excellent opportunity to put the pressure on their immediate rivals.
Chelsea FC will now take on Slavia Prague for a place in the Europa League semi-finals next month.
Maurizio Sarri would surely love to win a trophy during his first campaign in charge at Stamford Bridge and his path to the final has now been mapped out.
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