Main concerns with him seem to be his inability to do 90 minutes - something I've heard Saints fans mention
I've heard that point a few times, including in a match thread once, so decided to investigate.
He does get subbed off a lot, but he seems to be more durable than some believe. Based on the 37 EPL games he started
last season (it is a good thing that he was able to start in all bar one game last season, and in that game he came on at half time), he stayed on the pitch around
82 minutes on average (82,13 to be more precise).
(The point someone made in the match thread was that he couldn't last over 60 or 70 mins).
The number of minutes per game started varied a bit over the course of the season too. To illustrate that, I divided the season in 3 periods (first 12 games, middle 12 and last 13 in which he started).
Adam Lallana - 2013/14First 12 games - 77 mins per game
Middle 12 games - 87 mins per game
Last 13 games - 82 mins per game
2012/13 is harder to judge, as his season was hampered by an injury that kept him out for around 2 months if I recall correctly. Still, up until his injury in December 8, he started 15 EPL games and played
89 minutes on average, which includes 9 games in a row playing the full 90 minutes (I excluded the Reading game from that list as he was subbed off due to injury in the 39th minute mark). After he came back from injury, he was either subbed-on or subbed-off in every game he's played, so maybe that's where that perception he's not durable comes from (based on starts only, he played on average 72 mins in 10 games).
Just to finish this digression (because I did take the time to see the numbers, so now I feel like posting them, however insignificant they may be), let's take a look at his
2011/12 season, still in the Championship:
38 starts,
84 mins played on average. This number was relatively stable during the whole season, though it did include a subbing off in the 28th minute once, probably due to injury. It also seemed to me that he was subbed off more often than not when the Saints were winning, which might indicate they were simply protecting their best player, but that needs more analysis which I just don't feel like doing