He is a real threat (sometimes), he's capable of absolutely anything; moments of pure genius and moments of "just fucking pass it you greedy bastard". No one can ever deny him that, it's impossible.Massive liability? Ridiculous comment, he was a real threat tonight and played well albeit his finishing let him down.
He is also a massive liability though as the previous poster alluded, just compare and contrast the workrate and levels of concentration between Mahrez on the right and Jesus on the left. Jesus protected Mendy every single time, he's that reliable and trustworthy that you don't even doubt if he'll be back helping the team. Mahrez however, let's people run, isn't reliable and isn't trustworthy for 90 minutes; just look at the late chance Real got when their left back Mendy nearly got a goal just because Mahrez wasn't switched on and wasn't concentrating. That's in a Champions League game against Real Madrid, when you should be absolutely desperate to try and do everything for the team, he's a huge fucking liability.