Mauricio Pochettino's chances of becoming the next Manchester United manager have taken a hit following recent reports that Lionel Messi is unhappy with his boss at Paris Saint Germain.According to L'Equipe, the seven-time Ballon d'Or winner is unimpressed by Pochettino's tactics and thinks he's a soft touch in the dressing room.He's grown frustrated by PSG's 'restrictive' approach in games and many of the senior players are losing respect for the 49-year-old.Pochettino is the favourite to take over at Old Trafford in the summer but United could reconsider the move in light of reports coming from Messi's camp - potentially opening the door for interim manager Ralf Rangnick.The German, who oversaw his first game as Red Devils manager against.
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