Mauricio Pochettino looks set to take over from Michael Carrick at Old Trafford

Mauricio Pochettino will have a lot of work to do at Manchester United once his appointment is completed, amid squad disharmony. There has been a reported bust-up between Youri Tielemans and Lisandro Martinez, and the squad's feelings on the current situation have been outlined.

Things are not helped by United's position in the Premier League table. The team sit in the relegation places, with the results and performances appearing to have cost Michael Carrick his job. Mauricio Pochettino is being lined up as his replacement.

The manager is currently in charge of the USA national team. He signed a new contract in the summer with a $10million (£7.5m) release clause, which United are ready to trigger.

The Argentine will face numerous challenges in his bid to salvage United's campaign. Chief among them will be restoring harmony and unity within the dressing room.

The Daily Mail reports that Tielemans and Martinez exchanged heated words on the return flight from Madrid after Martinez publicly criticised the United hierarchy. When questioned on camera about his teammate's remarks, Tielemans merely responded, "No comment."

These comments, along with subsequent dressing room confrontations, exposed the underlying tensions at United. This turmoil has manifested itself in disappointing performances and results on the pitch.

However, it appears the United dressing room continues to back Michael Carrick. It's reported that Sources close to the squad suggest the feeling is that Carrick has been 'hung out to dry' as the club attempts to secure Pochettino's appointment without formally dismissing him.

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United are understood to have attempted to finalise the appointment of the USA boss discreetly before informing Carrick. However, negotiations have been ongoing for several days now.

Carrick has maintained his usual routine at Carrington over the past two days, despite ongoing speculation surrounding his position. He turned up at the training complex as normal early this morning.

This follows reports suggesting several squad members had lobbied for Aston Villa boss Unai Emery to be appointed as Carrick's successor. The Spaniard was amongst a number of names floated when pressure initially began mounting on Carrick.

He was at Old Trafford with his Villa side on Sunday, and made no attempt to conceal his frustration as he marched down the touchline following Patrick Dorgu's stoppage-time equaliser in the 4-4 draw. Villa were unlikely to release their manager without significant resistance, prompting United to pivot towards Pochettino instead.

The former Tottenham and Chelsea manager is on the verge of joining United. The club are understood to have contacted the US Soccer Federation and are prepared to meet the £ 7.5 million compensation requirement.

His arrival at United may be postponed if Pochettino stays with the USA for their two fixtures during the international break. The team face Haiti across two legs of their Concacaf Nations League quarter-final.

His debut match in charge of United will take place on November 22, when the side travel to face rivals Liverpool at Anfield.