Benjamin Mendy was an unlikely goalscorer as Manchester City took another step towards the Premier League title with an authoritative 2-0 victory at Leicester City.

Pep Guardiola's side were dominant for long periods, Kevin De Bruyne hitting the crossbar, but had to wait until the 58th minute for left-back Mendy to find the breakthrough.

Both teams had seen goals ruled out for offside by that point, with Jamie Vardy frustrated in first-half stoppage time, although nothing approaching a repeat of Leicester's 5-2 early season triumph at the Etihad Stadium ever appeared to be on the cards.

A majestic De Bruyne throughball allowed substitute Raheem Sterling to tee up Gabriel Jesus for a game-sealing goal that put the leaders 17 points clear of Manchester United, albeit having played two games more than Ole Gunnar Solskjaer's men.

Manchester City captain Fernandinho drilled a 25-yard drive into the bottom corner but his fifth-minute effort was ruled out because Sergio Aguero jumped over the shot in an offside position.

De Bruyne went closer for the visitors, rattling the bar with a 23rd-minute free-kick, before Kasper Schmeichel saved with his boot to thwart former team-mate Riyad Mahrez and Jesus thrashed over before half-time.

Leicester's first shot belatedly arrived in the 48th minute, when Youri Tielemans treated Ederson to a routine stop.

Ruben Dias slid in to make a telling block from the Belgium midfielder moments later after Kelechi Iheanacho picked Fernandinho's pocket.

Mahrez stung Schmeichel's palms before the hour and Leicester failed to clear the danger – possession falling to Mendy, who stepped inside Marc Albrighton and slotted home right footed.

Sterling and Jesus threatened to undo De Bruyne's imperious work 16 minutes from time but held their nerve to seal victory as blue shirts darted back towards the goalmouth in vain.

Mahrez trudged off having come agonisingly close to scoring against his former employers, clipping a shot just wide after Jesus mugged a flagging Jonny Evans.

Manchester City will conduct an internal investigation after being left "disappointed" by Benjamin Mendy's breach of COVID-19 protocols. 

France international Mendy - who has made nine appearances in all competitions this season - is reported to have staged a party on New Year's Eve that included guests from outside his household. 

In a statement, the Premier League club confirmed they are aware of the situation involving the player, who has since apologised for his error amid the ongoing coronavirus pandemic.

City are without a number of first-team players following an outbreak of the virus that forced their game away at Everton on December 28 to be postponed. 

"The club is aware of a New Year's Eve Covid-19 breach involving Benjamin Mendy and the subsequent media reporting of it," City said in a widely reported statement. 

"While it is understood that elements of this incident have been misinterpreted in the reports, and that the player has publicly apologised for his error, the club is disappointed to learn of the transgression and will be conducting an internal investigation." 

Pep Guardiola confirmed on Friday that three more "important" members of the first team had tested positive, following on from confirmed cases for Gabriel Jesus and Kyle Walker, as well as two members of staff. 

City closed the training facility due to the situation within the club, though the squad were able to return to work on Wednesday ahead of Sunday's trip to Chelsea. 

They are not the only top-flight team to be dealing with a coronavirus outbreak, though. Fulham have had festive fixtures against Tottenham and Burnley cancelled. 

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