The 25-year-old ex-Red Devil was rumoured to be a target for the Blades earlier in the close season, but the recent signing of centre-backs Chris Morgan and Mike Whitlow revealed Neil Warnock's intention to make England Under-21 star Phil Jagielka first choice on the right of defence.
Curtis is Mickey Adams' 11th signing since becoming Foxes manager, and signs for a reported 'nominal fee'.
Curtis is Mickey Adams' 11th signing since becoming Foxes manager, and signs for a reported 'nominal fee'.