I mean Eddie Howe is doing an alright job. But I guess it was not enough for the Saudi Owners. But we have to take a look at where he is being held back. He has a big list of injuries. Probably his team has suffered the most injuries in the Premier League. They have not spent much money either considering they are a team owned by the Arabs. But I think they should not sack Eddie Howe. He got them the ticket to UCL last season and if the team stays out of injury then they can achieve it this season as well. The Premier League is very competitive so it is no easy job.
I don't know if Girona's coach will be enough either.
Yeah injuries has held them back but its all about board and how they see the management of Eddie Howe before coming to a decision. So far Howe's contribution to the Magpies has been very good but since now the expectations has changed so it is possible that Howe might face sack even with all those achievements with Newcastle last season. In my honest opinion, Howe would be given some more chances and if he doesn't lives up to those chances then I think he will be sacked without a doubt.
Yes, Premier League is not an easy one but all the clubs also wants to finish better and in order to finish better they need to makes chances and sacking coaches and signing a new coach is one of the way clubs usually find in order to get back on track.