Arsenal's Premier League clash with Liverpool on Sunday represents a battle for the present and the future. In an instant, Jürgen Klopp's decision to step down as Reds boss at the end of the season changed the dynamic of this and forthcoming campaigns.
Part of the reason it came as such a shock is Liverpool's current potency. At precisely the moment it appeared they had reestablished themselves as Manchester City's principal rivals, Klopp announced that he would soon be walking away.
This weekend's game at Emirates Stadium is a test of both the newfound durability of "Liverpool 2.