The midfielder's move from Norwich City was rubberstamped yesterday.
He said, "I thought long and hard about it. I had a good chat with my family and my agent. I've got a really tight-knit family so I sat down with my mum, my dad and my agent and went through everything.
"Leicester seemed like the right fit for me. I've got a good feel about the Club and I just can't ignore that in my head and my heart. I felt like this was the right place for me to be.
"It's been such a successful club and you can't ignore the Premier League title win [in 2016].
"I know that probably gets spoken about a lot in these parts but even as an outsider watching that I was urging Leicester to go on and win it.
"It's an ambitious club, speaking to all of those behind the scenes here I just can't wait to get started."