(Reuters) - Liverpool manager Juergen Klopp said the defensive issues on display against Brentford are not too much of a concern but they do not want to repeat those mistakes in Tuesday's Champions League group game at Porto.

Klopp's side came from a goal behind on Saturday to lead twice in an end-to-end match but conceded an 83rd-minute equaliser as Brentford secured a 3-3 draw.