The problem is, if neither work out (make that step up), we risk another season with a very poor right side.
Only option for me that makes sense to me to keep both is if we plan to either play Townsend more on left, or move Lamela into middle
I agree, it is somewhat of a risk. But this season, inspite of everything, we finished 5th and got to a cup final. I think Lamela has the potential to make a bigger contribution if we keep the faith (infuriating as he can be at times) and that Townsend is a decent squad option for both flanks, whilst players like Pritchard come through.
Neither player has been consistently good enough so far, and I don't think Townsend will ever be good enough to be a regular starter. But I won't be unhappy if they are both here come next season.