Unai Emery takes his Arsenal side, unbeaten in 21 matches in all competitions, to face struggling Southampton while Chelsea also travel to the south coast to take on Brighton. Manchester City host seventh-placed Everton in the early Saturday kick-off while Tottenham, fresh from reaching the Champions League knockout phase, face Burnley at Wembley.AFP Sports picks out some of the main talking points ahead of the weekend fixtures in the Premier League.Can Mourinho end Liverpool’s unbeaten run?Jose Mourinho came under fire last year for failing to attack Liverpool’s then leaky defence, settling for a 0-0 draw that cost his side momentum after a fine start to the season.Mohamed Salah scored a hat-trick for Liverpool against Bournemouth © AFP / Glyn KIRKNormally a draw at Anfield would be a good result but defeat could leave United 11 points off the top four if other results go against them.United scored four goals last week against Fulham but their attacking play has rarely been fluid this season and they are coming up against a defence that has conceded a single goal at home in the Premier League this season.In a statistical quirk, Roberto Firmino, Mohamed Salah and Sadio Mane will all be looking for a first goal or assist in a Premier League match for Liverpool against United in more than 14 hours of football but few would bet against Salah adding to his tally in his current rich vein of form.Jesus firing blanksGabriel Jesus is in a slump — he has not found the net in the Premier League since August despite chances to stake his claim in the absence of Sergio Aguero through injury. Manchester City forward Gabriel Jesus (right) has only scored one Premier League goal this season © AFP/File / Ben STANSALLCity boss Pep Guardiola has come to the defence of the misfiring forward, saying he just needs to relax but he will be scratching his head about how to get the best out of the Brazilian.Jesus started his City career brightly and was seen as a serious threat to Aguero’s position in the team.But the signs are that Guardiola does not trust the 21-year-old to deliver at the moment. He has started just four Premier League games this season and Guardiola left him out of the starting 11 against Chelsea last week despite the absence of Aguero.Arsenal’s defensive crisisArsenal are without a clutch of centre-backs for their trip to second-bottom club Southampton, seeking fresh direction under new manager Ralph Hasenhuttl.Sokratis Papastathopoulos and Shkodran Mustafi are suspended after picking up bookings in last week’s 1-0 win against Huddersfield while Konstantinos Mavropanos and Rob Holding are injured.Laurent Koscielny is nearing a return to action for Arsenal © AFP/File / GABRIEL BOUYSClub captain Laurent Koscielny could feature even though has been missing from the Premier League since May with a serious Achilles injury.Manager Unai Emery said the club could look into recruiting a defender when the transfer window opens — both Chelsea’s Gary Cahill and Eric Bailly of Manchester United have been recently linked with a move to the Emirates.Pochettino’s rising stockMauricio Pochettino enhanced his burgeoning reputation with an impressive 1-1 draw at Barcelona this week as his side reached the Champions League knockouts.Mauricio Pochettino has led his Tottenham team into the Champions League last 16 © AFP/File / Josep LAGOThe downside of the success is that the Spurs boss is being linked once again to clubs higher up football’s food chain, specifically Real Madrid and Manchester United.“It’s no coincidence that every day you read Real Madrid want him or United want him,” Danny Rose told the Guardian ahead of Tottenham’s match against lowly Burnley.“It’s exactly what he deserves. What he has done here in the last four or five years has been amazing. He has transformed how others think of us outside the club and he has transformed how we think of ourselves and how we approach big games.”Fixtures (1500 GMT unless stated)SaturdayManchester City v Everton (1230), Crystal Palace v Leicester, Huddersfield v Newcastle, Tottenham v Burnley, Watford v Cardiff, Wolverhampton v Bournemouth, Fulham v West Ham (1730)SundayBrighton v Chelsea (1330), Southampton v Arsenal (1330), Liverpool v Manchester United (1600)0Shares0000(Visited 1 times, 1 visits today) 0Shares0000Manchester United manager Jose Mourinho (left) pits his wits against Liverpool boss Jurgen Klopp this weekend © AFP/File / Oli SCARFFLondon, United Kingdom, Dec 14 – Jose Mourinho faces a quandary as he prepares Manchester United for a trip to Premier League leaders Liverpool while Manchester City will be keen to show that last week’s Chelsea defeat was just a blip.United have an impressive recent record against Liverpool, unbeaten in eight league games, but away fans will travel to Anfield on Sunday with a sense of trepidation.