Next 6 months he will evaluate the players he has to figure out what he will need on the transfer market. Of course meanwhile he does have to improve the output of some players, get more results in the league and perform better on the Europa League.
Obviously important to improve on the short term but I am not expecting an Ole type of bounceback when he replaced Mourinho, next months his interaction with those who work around him to figure out how and what type of players he will need in the market will be key to improve on the long term.
But he has to show something on the next 6 months, if not the atmosphere will be toxic for next season, obviously football is always about performance or results, even if tactics matter the most important thing on the short term will be how he creates relations on a personal level with the players at his disposal.
The rest is wishful thinking, articles from the media or social media baits to generate clicks is pure entertainment, he is not a football messiah or tatical guru, will need that bit of luck at the start and to create good relations with the players at personal level.
Obviously will need to show improvements on a tatical level, at least on the way the defensive line is coordinated but without pre season will be more difficult to assimilate those concepts.