The arguments for and against Barkley are missing the point that he isn't what we need in that position, good games or bad.
It's the most pivotal position on the pitch for us. It's the link between attack and defence, it's the one tasked with getting in the box to support Lukaku, it needs to be the creative hub of the team, under Koeman it needs to be the first line of defence. It doesn't need to be all of the above but it needs to be some of the above. Barkley doesn't deliver on any of the above.
It's not his game to and he never has done consistently in his career to date. He had one good half a season last year and then fall away since. We can't expect him to be the player he isn't and probably never will be. It's not 'Barkley-bashing' it's just reality. It's the one area we need to spend huge on in the summer, if we're going to keep playing this system.