Liverpool have nothing to lose in that game they are already champions of the season so it is normal that the Manager will want to give minutes to some of their youth players and send team players to play while they rest their key players. Chelsea had a good advantage in this regard going into that game so they had ton win because they had more to play for.
I think that Liverpool will definitely not give Arsenal the satisfaction of winning on Anfield and will try to humiliate them further by betting them in the last match between them his season, so we wont see youth player or rotation player. Liverpool will give them hell on home ground and complicate there Champions League position.
You can't really tell how aggressive Liverpool attack will be. They have nothing to lose whether they win the match or not. Arsenal will play with their last strength to make sure that they secure three points in this match. Otherwise, they might found themselves on the third position. I hope that Arsenal wouldn't finally end up going to Europa League next season
