The 21-year-old has made two appearances for the Blues from the bench so far this season.
Ahead of his anticipated full debut during tomorrow's Capital One Cup tie against Wolverhampton Wanderers, Di Matteo has tipped the attacker to become a key member of his squad over the coming months.
"He's a player I like very much and he will have a big influence in our season," Di Matteo told reporters. "He's strong at holding the ball, his dribbling ability is very good.
"He can go past defenders, which not many can, he's got the pace as well and he's very good at making runs in behind."
Moses begun his career with Crystal Palace before joining Wigan Athletic in 2010.