I genuinely think that his time should be done at the end of the season.
I get the hope that he can deliver with the right signings and that he didn't suddenly become a bad coach again after the relative highs of the last two seasons, however I think he will struggle to turn this around. PSV result aside, our team is really bland without Saka, Havertz or Jesus, with only the former being consistently reliable. The players and him just seem bereft of energy and attacking ideas. We haven't won in 3 league games, and if we have a so so performance for our last 10 games, that will be a third of the season which has been "wasted". I don't see the shoots of any tactical or personnel experiments that look like they could hold value going into next season which we can buy into even if our chance at the title is gone. All I feel is a manager going through the motions ahead of trying again next season. However, that period of time between now and end of season is long, and if we fail to regain any positive vibes/momentum, then I think he will find it extremely difficult to remotivate most of this squad for next season. Basically, the players don't look like they are in the presence of someone who can still inspire when things get difficult.