Mikel Arteta must keep faith in one Arsenal star against Everton on Sunday despite his poor showing against Manchester United. Arsenal were far from their best as they battled to a 1-0 win over Manchester United at Old Trafford last time out. Whilst William Saliba produced an imperious performance in the heart of the Gunners’ defence, the team in general were below par. The North London outfit struggled to take control of the match in the middle of the park. Martin Odegaard was not as influential as usual, Declan Rice failed to impose himself, and Thomas Partey looked vulnerable. Thomas Partey…