I'm not sure about giving him more time but LVG said something like " if he had known he was going; he would have grabbed all the group of players & made them give it their all until the new manager came whilst getting them ready for the next manager" - I don't personally see anything wrong with that & in fact I find it beneficial considering that Jose & LVG know a lot about each other - possibly helping us a bit last season too.
Moyes though slightly different because he was genuinely lost at managing a club like United should have been given more help likewise whether he was going or not. I felt this big distance between the manager, the players & the hierarchy that I didn't like that only got bigger when it became evident that Moyes was feeling more & more lost.
Its stuff like this which makes me feel that United is run like a business where stuff like public sackings are part of its DNA all of a sudden. We have always been a club full of class in my opinion - but wouldn't surprise me if that was just SAF who was clearly a manager who was doing more than just management of a football team.
LvG must've known, or had a good idea he was being replaced in the Summer from January onwards, as there were far too many rumours about Mourinho flying around for there to be no truth in it, and i'm pretty sure the players were aware of it as well, so credit to LvG, his staff and the players for sticking at it till the end of the season.
Can't remember where we were in the League at the end of January, but once the players knew they were safe from being transfered out of the club, and pretty sure LvG was leaving sooner rather than later it would have been so easy for the players, or some of the players to not so much down tools but totally ignore what the Manager was saying and doing their own thing, it wouldn't have been the first time it happened at a big club, and it certainly won't be the last.
In the circumstance i'm not surprised Mourinho came to the club not in the Champions League, and it's harsh to blame LvG for that, sadly most do.