Guardiola believes Leicester will pose a formidable challenge to his Premier League leaders despite a slump in form.
The 30-year-old Mexican international completed a remarkable recovery in playing the whole of Wolves's 1-0 defeat by Leicester in their opening Premier League match.
James Maddison will be back in Leicester's squad for Saturday's clash against Manchester City.
Manchester City, Manchester United, Leicester and Chelsea currently occupy the top four places in the English top-flight
Justin was carried off in Wednesday's 1-0 FA Cup win over Brighton and has damaged his anterior cruciate ligament (ACL).
Gray has failed to cement his spot in the side and is likely to leave the Premier League club when his contract expires at the end of the season, Rodgers said.
Liverpool forward Mohamed Salah is singled out by critics for diving to win penalties because he plays for a top Premier League club.
A helicopter belonging to Leicester City football club owner Vichai Srivaddhanaprabha crashed in a ball of flames.
British police investigating a shop blast a week ago which killed five people in the central English city of Leicester.
Leicester are eighth in the standings but without a win in their last four league matches.
British police said on Sunday there was no immediate indication that an explosion that destroyed a convenience store and a home was linked to terrorism.
Ambulance officials said they took four patients to hospital after an explosion destroyed a convenience store and a home in central English city of Leicester.
British police declared a major incident on Sunday after a large blast destroyed a convenience store and a home in the central English city of Leicester.
The 20-year-old suffered the same injury in the goalless third-round FA Cup draw with Wolverhampton Wanderers and has struggled for fitness this season.
Ryan Giggs confirmed his interest in training in the Premier League, after the short experience he enjoyed at Manchester United.
Chelsea manager Antonio Conte warned the rest of the Premier League that double player of the year N?Golo Kante is only going to get better.
Belgian forward Eden Hazard could return for champions Chelsea's Premier League clash at Leicester City on Saturday after fully recovering from the fractured.
Arsenal succeeded in achieving the first three points in the League, raising the expectations for the team this year.
Arsenal manager Arsene Wenger said that he is interested in Leicester winger Riyad Mahrez, who had previously asked to leave Leicester.