The Norwegian was handed the charge after the dismissal of Jose Mourinho back in December last year and had managed to turn the tide to United’s favour.
The Red Devils broke into the Premier League top four and also fought from two goals down to tame down Paris Saint Germain to book a place in the Champions League quarters.
United hierarchy decided to trust him with the permanent managerial post but that hasn’t gone down well so far. United have managed just two wins in this phase and defeats against Cardiff City and Barcelona have hurt the Red Devils very much.
Herrera said, “I really believe in Ole. I really believe in Michael [Carrick], Kieran [McKenna], Mick Phelan, in Demps (Mark Dempsey), but I think there is a tough job ahead.
“That is my opinion as a fan and as someone who knows the club at the moment.
“These fans are the best, they are amazing, but they need time. They need time because this is not going to be from the first day. The club will need time, confidence and support
“I am sure they will give it but the only thing I ask for them is time because this is not easy.
“[But] the right person is at the wheel. He’s the right person”