The 21-year-old is set to undergo a medical with the west Londoners after the Blues had a bid of around £9m accepted by Wigan Athletic on Thursday.
Di Matteo praised Wigan boss Roberto Martinez’s impact on the former Crystal Palace player’s development and is hoping Moses can establish himself as a Stamford Bridge star in seasons to come.
“The clubs have agreed terms now and the player will have a medical. Subject to that he could become a Chelsea player,” Di Matteo told a news conference on Friday.
“Roberto Martinez did a wonderful job with this player when he signed him. He had a really good season last year and hopefully we can progress his development.
“He’s got great dribbling ability and pace. He’s good with and without the ball. He’s a great option to have in our team.
“We tried very hard to get this player in. We like him very much, he’s a young player and hopefully he’ll be the future of the club.”
Meanwhile, Chelsea have wrapped up the signing of Spainish defender Cesar Azpilicueta from Marseille and Di Matteo says the 22-year-old will give the Blues cover at right-back.
“He’s a young player from Marseille,” Di Matteo said. “He’s come through all the ranks with the youth level Spanish team.
“He will give us cover in the right-back position with Paulo Ferreira and [Branislav] Ivanovic there.
“I think that gives us more options for the future as well. There’s competition for positions like every other position and we’ll see who players.”
New signing Eden Hazard has impressed in his first two appearances in the Premier League since joining from Lille earlier this summer.
And Di Matteo admits he has been impressed by the speed at which the 21-year-old appears to have adapted to the rigours of the Premier League.
“He’s [been] very good and I think that also the other players have facilitated his integration into the team, which has helped him,” added Di Matteo.
“It sometimes takes time to get used to the higher tempo football that is played in England and he seems to have adapted quite quickly.”
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