Lallana, Lambert, Lovren and you could argue Balotelli were Premiership proven last year, it doesn't mean anything.
Oh come on, you can't use them as examples of Premier League proven players being a failure -
Lambert was brought on for a few mins at the end of some matches, he was never given a proper run out in games.
Balotelli wasn't utilised properly, when he did get game time, he was solid. The problem being, he would play well in one match then get dropped the next, afer penalty-gate for instance he was dropped.
Lovren was being forced to play in a system which wasn't natural to him, even Hyypia would struggle in BR's system. Even still he was dropped for half a season and when he got a run of games he played well, even Carragher rates him very highly.
Lallana has been one of our better players when he actually had a run of games, between being dropped and being injured, he hasn't been able to find form.