Former assistant Chris Armas believes dressing room leaks and the club's exit from the Champions League were the two most detrimental factors at Manchester United last season.
Ralf Rangnick was appointed interim manager of United in November following the sacking of Ole Gunnar Solskjaer and he brought Armas to the club as his assistant coach. The duo both left at the end of the season, however, after a disastrous period in charge that saw the club finish sixth in the Premier League and trophyless.
United's slim hopes of winning any silverware were ended when they were dumped out of the Champions League by Atletico Madrid, when they lost at home, having already secured a creditable draw away. And Armas believes the European exit knocked the momentum out of the progress United had been making under Rangnick, something further hampered by a number of dressing room leaks.