I think Newcastle can still sign a coach and some players in the upcoming transfer market but yes, targeting to finish the season in the top 5-10 is not that easy. Newcastle just need to stay out of the relegation zone and with new ownership at the moment then I think it will be easy at least Newcastle can stay in the EPL basically that's enough. It still takes time for Newcastle to succeed, even though they are now the richest team, but there are rules that are applied regarding financial fair play, which of course, quick changes cannot be made haphazardly.
Totally agree on this^^, I actually forgot that Newcastle right now is in relegation zone. No doubt that they would sack Steve Bruce soon as the current things are not where owners want the Newcastle to be in. This season for sure their target should be stay out of relegation zone. I think they are gonna sign some good staff and decent players to get the job done for Newcastle this season. I think major changes would go down from next season for Magpies.