By Mark Jones It’s Jurgen Klopp vs Pep Guardiola, for potentially the final time. It remains to be seen what will become of the Liverpool boss once this season has ended, with his decision to step down at Anfield still being digested by many due to the sheer shock of it, but if this really is the end of his time as a top club manager then his rivalry with the current City boss will endure the test of time. It isn’t a rivalry based on bitterness, or on needless barbs aimed in the other’s direction, but more on a mutual respect for the game and its players. So what must it be like to have played…