Being "kneejerk" is not just restricted to Mane. Every new player that has a bad or slow start is 'a waste of money' and a 'sh!t signing' and every youngster who has a decent debut is the next Gareth Bale, when in reality they are more likely to be Lloyd James. Mane was poor earlier in the season but he was doing things he probably got away with in Austria. Everyone could see he had the attributes to be a decent player (good skill and pacey) but he had to work on his speed of thought, decision making and concentration, which will be an ongoing process as he gets more experience in the English Premier League.