Rodgers departed Anfield in 2015, after a little over three years in charge.
Gray was denied a second by Ryan as Leicester, who sacked manager Claude Puel at the weekend after a run of five defeats and a draw, began at a fast tempo but the visitors reached halftime with no further damage.
'So I think he was pleased with the spirit.
"But Celtic fans will say that Celtic is the club and he's let them down".
Leicester host Brighton on Tuesday night, and announced Rodgers' arrival an hour before kick-off at the King Power Stadium, where he will watch on from the stands.
"I want to make a special mention to the Celtic players".
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Nobody sees him as a real threat and if we can start stringing victories together then it surely won't be long before we start to close the current eight point gap.
Hughton said: 'Of course the game is won and lost at both ends and at the moment we're not putting away opportunities and so we have to make sure we're not conceding.
Rodgers spent four full seasons with the Merseyside outfit before he was relieved of his duties, and went on to seek pastures new north of the border, joining Celtic in the summer of 2016.
"He gave the club so much and has created so many wonderful memories for the Club and our supporters". He has dominated Scottish football and ensured that Celtic has enjoyed unprecedented domestic success.
"He's won the league twice, he was going for his third treble".
This term, Celtic once again find themselves at the top of the Scottish Premiership table and have already lifted the Scottish League Cup with a 1-0 win over Aberdeen in December - Rodgers' seventh trophy in just two and a half seasons in Scotland.
He succeeded Paulo Sousa in the role as he built a side whose eye-catching playing style helped guide them to Premier League promotion in 2011 with a 4-2 win over former team Reading in the Championship Play-Off Final at Wembley.