I'd rest Firmino V Burnley and possibly for the Bournemouth game. He's an incredibly hard working player but, and it could be the service he is or isn't getting, he's not on blob. He's better suited to the pacier game we used last season. This season we have been building a much more solid framework, hard to beat and score against.
The front 3 aren't thriving as much, still very effective but the less pacy attacking has meant less chances created. Off the cuff creative attacking and quick thinking are more Bob's forte. Add to that the amount of pressing he does makes for a clever sophisticated front man. Loath as I am to see him step down to regroup and replenish his batteries I think a breather would be good for him.
Origi or Shaq in or Sturridge for the next two games.