Lallana is a regular Liverpool player and England international. He had a stand-out season at Southampton where he was one of the top performers in the most competitive league on the planet.
He is a top player.
So one good season for Southampton in a season where they finished 8th defines a top player?
A top player would have proved himself at the very highest level, like after an expensive transfer to Liverpool, unfortunately Lallana has seriously struggled since his transfer, he would have been much better staying at Southampton and being a big fish in a small pond.
When I look back at some of the midfielders we've had over the years, Gerrard, Alonso, Mascherano and Hamann are the most obvious. It's painful that these type of players have been replaced with some of the rubbish we have today.
You have no justification for calling Lallana a top player after one good season for Southampton, he's 27 years old and has had one standout season at the top level, thats it!