Maresca put his faith in youth against Astana and one of those to really catch the eye was 18-year-old forward Marc Guiu.
He scored Chelsea’s first in the 3-1 win, while their second came when the Spaniard’s strike was helped over the line by home defender Aleksandr Marochkin.
Guiu also netted in the 8-0 win against FC Noah in the Uefa Conference League on 7 November and, while a start in the Premier League is unlikely any time soon, he is showing the talent to potentially be another attacking option for Maresca to call upon.
Guiu certainly has promising pedigree, having started his career at Barcelona and marked his debut for the Spanish giants with a goal after just 33 seconds.
“He must have watched Luis Suarez as a young man at Barcelona,” Cole added on TNT Sports. “He has great movement. He was a thorn in the side throughout the game.
“I love him. He will give you energy and aggression. This kid is 18 and how big and strong he will be when he gets older.
“Chelsea have a real gem there.”