So what your saying is he is a liability at this moment in time thenI'm not convinced that Lucas and Allen can play together, they've had 5 or 6 games together now and I've yet to see any hint of an understanding between them.
As I said above, the issue isn't the individual players but the balance of the midfield. And you're going to write off Lucas and Allen playing together in the future after a handful of games where 1 isn't fit after coming back from over a year out and the other needs a break?
Right now Henderson needs to be in the side to make up for the short-term issues with Lucas & Allen.