I'd rate Butland as being a lot better than Forster and i rated him at Celtic + when ive seen him at southampton.
Just think Butland is top class.
Also dont be surprised if Karius is very good as well.
This is why we need to ignore Cillissen. Hes not better than that list either....Rico or Leno would be on it though--and we need top class.
I think Butland has the potential to be a lot better than either Forster, Zat, but for now I'd say they're pretty even.
Agree on Cillissen. He's certainly not bad but I'd be seriously chuffed if we went for Leno or Sommer (both vastly experienced and still only 24/27 respectively, and wouldn't cost half of what Forster would - plus they're both arguably better).
Haven't seen enough of Rico to judge fully but I know he's very highly rated. Has to be to be in that Spain squad...