Manchester United defender Lisandro Martinez lambasted the hierarchy for failing to recruit sufficient players during the summer transfer window, claiming this left their squad woefully unprepared for the Champions League.

As if Manchester United weren't in enough turmoil... It's now being reported that summer recruit Youri Tielemans was the unnamed player who had a heated confrontation with team-mate Lisandro Martinez last month.

It came after United defender Martinez lambasted the hierarchy for failing to recruit sufficient players during the summer transfer window, claiming this left their squad woefully unprepared for the Champions League. The 28-year-old even targeted director of football Jason Wilcox, declaring that he 'expects more' from him.

Sky Sports reported at the time that one player - who they did not name - confronted the Argentine about his remarks as the squad boarded the aircraft for their return journey to Manchester after the Champions League defeat to Atletico Madrid

Now according to the Daily Mail, it was Tielemans who confronted Martinez on the return flight from Madrid concerning the latter's public criticism of the United hierarchy. When questioned on camera about his team-mate's remarks, Tielemans merely responded "no comment".

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Mauricio Pochettino will face numerous challenges in his bid to salvage United's campaign once he takes over. Chief among them will be restoring harmony and unity within the dressing room.

Captain Bruno Fernandes also spoke out, questioning Carrick’s tactics after the Champions League defeat to Como.

This discord has left United languishing in the Premier League relegation zone and appears to have sealed Carrick's fate, with Pochettino poised to take over. The ex-Tottenham and Chelsea chief is edging closer to joining United. The club are understood to have approached the US Soccer Federation and are prepared to stump up the £7.5million compensation package. Pochettino's start at United might be pushed back if he stays with the USA for their two fixtures during the international window. The national side face Haiti in the home-and-away legs of their Concacaf Nations League quarter-final. His opening match at the helm of United is scheduled for November 22, when the Red Devils head to Anfield to face arch-rivals Liverpool.