The Foxes have landed the promising 19-year-old winger on a four-and-a-half year deal from Championship club Birmingham City and his arrival at the King Power Stadium has been well-received by England U20 teammate Chilwell.
The 19-year-old left-back, who recently returned from a loan spell with Huddersfield Town, feels Gray's attributes will suit Leicester well and is confident the ambitious youngster will become a quality player in the Premier League.
"Leicester like to play on the counter. They've got lots of pace going forward and he'll add to that," he told LCFC.com.
"He's so quick and will definitely add to their strengths.
"I spoke to him a few days ago. I said I'd heard he was coming. We spoke about Leicester a bit and I'd spoken previously about it away with England too. I think he's looking forward to it.
"He's played a lot of games in the Championship for Birmingham and he's probably one of the better players there. He's proven himself there and he'll be wanting to prove himself in the Premier League now."