Arsenal seems has good schedule match since against Bayern Munich in Champion League quarter final match on the first and second legs, before facing Bayern on the first leg match Arsenal will face Brighton Albion and Arteta will make huge rotation regarding Brighton is not difficult opponent teams in this season and easily take three points for pressure Liverpool and Manchester City in Premier League then keep taking positive capital for second leg matches.
First they will meet Manchester City, second they will meet Brighton and Arsenal have many reasons to not seriously rotate their players before matches with Bayern Munich. They don't have too many good players for rotation and the competition in Premier League is not easy, and Arsenal don't have good advantage against Liverpool and Manchester City to bet with player rotation that can cost them dropped points.
Brighton is not a weak team in Premier League and Arsenal will make big bet to rotate many players in a match with Brighton. They will have less reasons to rotate players if they won't have good result from a match with Manchester City.