Pep Guardiola & Ruben Amorim named among Premier League's most disappointing managers as Man Utd prepare to host Man City in derby of flops

Both Manchester United and Manchester City have suffered poor campaigns and former Arsenal and Chelsea midfielder Emmanuel Petit believes they are in a group of the worst-performing bosses in the top flight, along with Tottenham's Ange Postecoglou.

United are set to suffer their worst-ever Premier League campaign, requiring 22 points from their last eight matches to avoid their lowest points tally in the competition, while City's run of four consecutive titles is set to come to an abrupt halt. Petit insists both managers could have done more to improve their teams' fortunes - but accepts Amorim is not totally at fault for United's problems.

The 1998 World Cup winner told pokerfirma.com: "It's hard for me to say that the most disappointing manager this season so far has been Pep Guardiola, but I think he's in that group. I would put Ange Postecoglou in that group, even if I think he's not the only one responsible for the situation at Spurs. I would point the finger at Amorim at Manchester United, but I think he follows the path of so many managers that failed at Manchester United. Is Amorim responsible for the mess at Manchester United? I don’t think he is – the problems run a lot deeper than the dugout."

United host City at Old Trafford in the Premier League on Sunday but both sides are aiming for different silverware between now and the end of May. United take on Lyon in the Europa League quarter-final this month, while City face Nottingham Forest in the semi-final of the FA Cup.