If we get CL football, Maresca is going nowhere.
If we don't, it's a sticky situation but my gut feeling is they'll give him another season, unless we really fall off a cliff from here and finish miles outside the CL positions. That's what got Potter sacked. If he had been within touching distance, in amongst the race for top 4, he would most likely have kept his job. Narrowly missing out on CL football will probably be enough to keep Maresca's job.
If they sack Maresca after 1 season, the vast disconnect between their ruthlessness and their stated goals will be illuminating. The transfer strategy (targeting young players with mostly limited experience at the top level, zero experience of winning) and the kind of coach they've given a 5 year deal to (again, young, inexperienced, zero track record of any kind of winning at the top level). All their decisions so far regarding player and manager recruitment suggests they want to build something that can last long term. Except when it comes to sticking with a manager through some adversity.
A lot of the reporting around Maresca's hire suggests he was more of a sporting directors hire than an ownership one, so if Maresca goes, Stewart and Winstanely have to follow him out of the club.
Hopefully this all just stays as hypothetical chat and we actually secure at least 5th place.